JWH-210 CHEMICAL POWDER - Versionsgeschichte

ClintMassola5 am 24. Mai 2026 um 07:27 Uhr

2026-05-24T07:27:05Z

MargretBleau1 am 24. Mai 2026 um 07:12 Uhr

2026-05-24T07:12:46Z

CindaBeor09: Die Seite wurde neu angelegt: „All of the compounds tested in the present study depressed locomotor activity as is typical for other synthetic cannabinoids (see review by Wiley et al., 2017)…“

2026-05-23T07:39:53Z

Die Seite wurde neu angelegt: „All of the compounds tested in the present study depressed locomotor activity as is typical for other synthetic cannabinoids (see review by Wiley et al., 2017)…“

Neue Seite

All of the compounds tested in the present study depressed locomotor activity as is typical for other synthetic cannabinoids (see review by Wiley et al., 2017). Average horizontal activity counts/10 min as a function of time (10 min bins) and dose. Depressant effects of 1.33 mg/kg were observed within 10 min following administration and peak depressant effects were JWH-210 powder observed between 0–30 min. Duration of the locomotor depression increased over dose from 30 min following 0.1 mg/kg to 2.5 h following 1 mg/k Some mice showed abnormal behaviors (catalepsy, loss of traction, convulsion) right after the administration of the tested substances. The locomotor activity of the mice was measured 30 min and 2 hrs after the last substance administration. We also examined their neurotoxicity using brain samples through histopathological diagnose, especially in the nucleus accumbens core region. In histopathological analysis, neural cells of the animals treated with the high dose (5 mg/kg) of JWH-081 or JWH-210 showed distorted nuclei and nucleus membranes in the core shell of nucleus accumbens, suggesting neurotoxicity. Table of Conten The findings produce an apparent paradox, since CPP and self-administration predict with high reliability the likelihood that a compound will be abused by humans, and cannabinoids are well-known to produce active drug-seeking in human These synthetic cannabinoids act directly at cannabinoid CB1 and CB2 receptors as does Δ9-tetrahydrocannabinol (Δ9-THC) found in marijuana, but have different chemical structures unrelated to Δ9-THC, different metabolism, and often greater toxicity (Fantegrossi et al., 2014). Discriminative stimulus effects were tested in rats trained to discriminate Δ9-tetrahydrocannabinol (3 mg/kg, 30-min pretreatment). 5F-MDMB-PINACA (also known as 5F-ADB, 5F-ADB-PINACA), MDMB-CHIMICA, MDMB-FUBINACA, ADB-FUBINACA, and AMB-FUBINACA (also known as FUB-AMB, MMB-FUBINACA) were tested for in vivo cannabinoid-like effects to assess their abuse liabilit In case of cannabis or Δ9-tetrahydrocannabinol, there are many previous studies regarding with their dependence potential and neurotoxicity (Cororan, et al., 1974; Harris, et al., 1974; Leite and Culini, 1974; Hutcheson, et al., 1998 Figure 1. Each training session lasted a maximum of 10 min, and the rats could earn up to 20 food pellets. Thirty minutes prior to the training sessions, rats received an injection of either vehicle or Δ9-THC and were subsequently placed in the behavior-testing chambers, where food (45-mg food pellets; Bio-Serve, Frenchtown, NJ) was available as a reinforcer for every ten responses (FR10) on a designated injection appropriate lever. A houselight was centered over the hopper close to the ceiling and was illuminated only when the levers were active. Each dose range included doses that were without effect to those producing at least 50% depression compared to vehicle control. Twenty-four male Sprague-Dawley rats were obtained from Envigo (Houston, TX). Male ND4 Swiss–Webster mice were obtained from Envigo (Houston, TX) at approximately 8 weeks of age and maintained in the University of North Texas Health Science Center (UNTHSC) animal facility for two weeks prior to testin A 30-min period, beginning when maximal depression of locomotor activity first appeared as a function of dose, was used for analysis of dose-response data and calculation of ED50 values. During test sessions, both levers were active, such that ten consecutive responses on either lever led to [https://cannabinoidsrc4f-adb.com/ JWH-210 powder] reinforcement. The substitution tests occurred only if the rats had achieved 85% injection-appropriate responding on the two prior training sessions. The locomotor activity assay was used to identify approximate time courses and dose ranges of psychoactive effects, which is useful for identifying parameters for drug discrimination experiments and are also predictive of the time course of the psychoactive effects in human users. The purpose of the present study was to assess the abuse liability of 5F-MDMB-PINACA, MDMB-CHIMICA, MDMB-FUBINACA, ADB-FUBINACA, and AMB-FUBINACA. Since there is currently no robust measure of the reinforcing/rewarding effects of cannabinoids, drug discrimination is currently the best model for assessing abuse liability of cannabinoids. The findings produce an apparent paradox, since CPP and self-administration predict with high reliability the likelihood that a compound will be abused by humans, and cannabinoids are well-known to produce active drug-seeking in human Tremors were observed in mice 30 minutes following 1 mg/kg AMB-FUBINACA in the present study. Pretreatment times and dose ranges for the drug discrimination assay were selected based on the time of peak depression in the locomotor activity assay in mice. Average potency of the discriminative stimulus effects of early compounds was 0.81±0.17 mg/kg (Gatch et al., 2014), whereas the potency of a recent set was 0.09±0.03 mg/kg (Gatch et al., 2018), and the potency of the current set is 0.05±0.01 mg/kg. Short-onset, short-acting compounds have a greater abuse liability, and long-acting compounds pose problems of long-acting adverse effects and interactions with other drugs. The duration of action of the synthetic cannabinoids tested using the 8-h protocol have varied widely, with some producing a duration of action no longer than 1 h, others producing a duration of action between 1–2 h, and others lasting more than 2 h. There seems to be a trend of newer synthetic cannabinoids being more potent than earlier compound

← Nächstältere Version		Version vom 24. Mai 2026, 07:27 Uhr
Zeile 1:		Zeile 1:
−	~~Our findings revealed~~ that ~~both victims consumed large amounts of alcohol preceding their deaths~~ (~~blood alcohol concentrations (BAC~~) ~~were 2.11~~ and 2.~~49 g/L~~, ~~respectively~~). ~~Forensic autopsy~~ of ~~both victims~~ was ~~performed four days after~~ the ~~time~~ of ~~death following~~ the ~~Recommendation No~~.~~R (99)3~~ of the ~~Council~~ of ~~Europe on medico~~-~~legal autopsies~~. ~~Elegans demonstrated~~ the ~~ability to form all~~ of the in-~~vivo metabolites and has the potential~~ to be ~~used as~~ a ~~complementary model to predict and characterize human metabolites~~, ~~as well as identifying possible~~ drug ~~toxicities for emerging SCBs~~. ~~Thus~~, ~~identification~~ of the ~~relevant urinary markers was based primarily upon~~ the ~~prevalence~~ of the in-vivo metabolites ~~instead~~ of the metabolites ~~ranking that was based upon~~ % ~~peak area abundance ratio~~. ~~Moreover~~, ~~genetic makeup~~, ~~physiological conditions~~ (~~age, gender [https://cannabinoidsrc4f~~-~~adb~~.~~com~~/ ~~adb butinaca] and ethnicity)~~, ~~environmental influences (diet~~) and ~~pathological factors~~ (~~liver diseases~~, ~~diabetes~~, and ~~obesity) would further complicate~~ the ~~metabolism~~ of ~~drugs. It should be noted that % peak area abundance ratios do not necessarily reflect absolute concentrations due to differences in ionization capacity~~ and ~~matrix effects bias for each metabolite.~~<br>~~Data concerning~~ the ~~combined effects of SCRAs~~ and ~~other substances are highly limited~~, ~~which renders forensic evaluation of possible overdose cases difficult . The threshold SCRA concentration for fatal overdose can be estimated ng/mL level~~ (~~0.37–4.1 ng~~/~~mL according to the reported cases~~) in cases in which 1.5–2.5 g/L of ethanol is present in the blood. The victims were brothers who were both found deceased after consuming 4F-MDMB-BINACA and ethanol. These confusing shorter names were not ~~scientifically adopted but were used by websites selling~~ the ~~drugs to~~ the ~~public. Monitoring metabolism of synthetic cannabinoid 4F-MDMB-BINACA via high-resolution mass spectrometry assessed~~ in ~~cultured hepatoma cell line, fungus, liver microsomes and confirmed using urine samples~~. ~~This article does not contain any studies with human participants or animals performed by any of the author~~<br><br><br>LC separates the urine or blood sample and QTOF-MS provides high-resolution and accurate mass measurements for precise identification and structural elucidation of compounds. The LC-QTOF-MS method offers a more comprehensive and sensitive approach for drug detection, covering hundreds of recreational drugs, including NPS. Besides increasing the temperature to enlarge the drug aerolisation and bioavailability, one can elevate the flow rate of air through the e-cigarette and/or add a diluent . Of all e-cigarette users registered at this forum, 7.8 % vaped SCRAs . About 15 % of individuals registered at forums for drug users such as erowid.org who vaped cannabis have also vaped SRCAs. SCRAs belong, together with synthetic opioids, cathinones, amphetamines and hallucinogens to the new psychoactive substances (NPS) that are currently developed at high speed.<br>Data availabili<br><br><br>~~Although there were reports on the metabolism of 4F-MDMB-BINACA using~~ in-~~vivo and various~~ in-~~vitro models, studies were either conducted using small in-vivo sample size such as 1 to 4 samples [~~5, ~~29] or~~ in closed environments such as forensic psychiatric wards and prisons . The hepatic cell line HepG2 is often used as an initial screen as it is known to produce high reproducibility results with relatively stable enzyme concentration, although they are limited by the ~~low~~-~~level expression of several metabolizing enzymes, including the cytochrome P450~~ (~~CYP) class of proteins [17~~, ~~18]~~. ~~In-vitro metabolism studies are generally used to complement these data using perfused organs, tissue or cell cultures and microsomal preparations amongst which pooled human liver microsomes (HLM~~) ~~have been frequently used to elucidate metabolism~~ of ~~SCBs [12~~,13,~~14,15,16]~~. ~~Since most SCBs are found extensively in metabolized forms in urine,~~ the identification of metabolites is of vital importance for forensic and clinical toxicologists. Identifying SCB intake and its correlating specific adverse effects require rapid elucidation of these SCBs. The proliferation of SCBs has become a ~~global challenge as new compounds are rapidly introduced into the illegal drug market to evade existing drug laws~~.<br>~~Fig.~~ <br><br><br>Product ions detected at m/z 302, 217, and 145 (B2) confirmed that tert-leucine and indazole moieties remained unchanged, leading to the structure elucidation of a hydroxy-functional group at the 4-position of the butyl side chain by oxidative defluorination. The product ion m/z 336 (loss of methyl ester moiety) further confirmed the presence of dihydroxylated metabolites. The precursor ion, m/z 364 (B14, B5/B6) had a loss of 2 Da from m/z 366 indicated further dehydrogenation of the ester hydrolysis plus monohydroxylated metabolites. The presence of the product ion m/z 320, likely formed from a loss of carbon dioxide, indicated monohydroxylation at the tert-leucine in B8 (m/z 219), butyl side chain in B9 (m/z 145) and indazole moiety in B13 (m/z 161). The precursor ion, m/z 350 showed a loss of 14 Da explaining the hydrolysis of methyl ester from 4F-MDMB-BINACA.<br>Fig. 2. <br>~~4F-MDMB-BINACA~~ was ~~hydrolysed via ester hydrolysis forming~~ the 4F-MDMB-BINACA ~~ester hydrolysis metabolite (B22)~~. ~~Data obtained from~~ the ~~twenty urine samples were retrospectively analysed and processed using TraceFinder software~~ based on the ~~identification criteria of mass errors less than ± 5 ppm for full MS peaks~~ and ~~MS/MS peaks from the theoretical mass and matching of MS/MS spectra~~. ~~The mixture was vortex~~-~~mixed and 500 µL~~ of ~~this mixture and 500 µL~~ of ~~methanol were loaded onto the Clean Screen FASt® tube. After incubation~~, ~~the mixture was cooled at room temperature~~, and ~~150 µL of purified water was added~~. ~~High~~-~~resolution QTOF-MS data~~ were ~~acquired on an Agilent 6510 Accurate Mass QTOF mass spectrometer (Agilent Technologies) equipped~~ with ~~dual electrospray ionization (ESI) source operated in both positive and negative ion modes~~, ~~to determine accurate masses of the metabolites. Chromatographic separation was performed on an Agilent 1290 LC system with a Poroshell 120 EC~~-~~C18 analytical column (2.7 μm~~, ~~75 × 2.1 mm; Agilent Technologies, Santa Clara, CA, USA)~~.<br>Fig. 1. <br>Monitoring metabolism of synthetic cannabinoid 4F-MDMB-BINACA via high-resolution mass spectrometry assessed in cultured hepatoma cell line, fungus, adb butinaca liver microsomes and confirmed using urine samples The threshold for fatal overdose of combined use of SCRAs and ethanol can be estimated as a little ng/mL (0.37–4.1 ng/mL according to the reported cases) of SCRA and 1.5–2.5 g/L of ethanol. The reported cases and reviews of the scientific literature suggest a possible synergistic effect between SCRAs and ethanol, because their combined use clearly increases their toxicity. The victim died due to severe necrotizing pancreatitis and acute kidney injury evolving into multi-organ failure 11 days after hospital admission . Studies have found no unequivocal synergistic effect between THC and ethanol at low or moderate ethanol doses [29, 30], but no data on high doses of ethanol are available. Given that THC and ethanol act on the same receptors, data on their simultaneous use may yield important insights in this regard.<br>Fungus C. elegans <br>Methyl (2S)-2-([1-(4-fluorobutyl)-1H-indazole-3-carbonyl]amino)-3,3-dimethylbutanoate (4F-MDMB-BINACA, 4F-MDMB-BUTINACA or 4F-ADB), found in numerous SCB product seizures, has been reported by various law enforcement since 2018 . However, most of the SCBs are full agonists at CB1 and CB2 receptors, having a higher risk of undesirable side effects when compared to THC which is a partial agonist . Synthetic cannabinoids (SCBs) are agonists at cannabinoid receptor type 1 (CB1) and type 2 (CB2), where they elicit their main effect	+	In general, the locomotor depressant and discriminative stimulus effects [https://cannabinoidsrc4f-adb.com/ adb butinaca] have been observed at doses that do not produce adverse effects, although tremors were observed upon handling in mice that received JWH-210 (Gatch et al., 2016), and 5F-AMB produced sustained vocalization and convulsions in rats (Gatch et al., 2018). All of the synthetic cannabinoids tested in the present study fully substituted for the discriminative stimulus effects of Δ9-THC. Subsequently, a one-way analysis of variance was conducted on horizontal activity counts for the 30-min period of maximal effect, and planned comparisons were conducted for each dose against the vehicle control using single degree-of-freedom F tests. A two-way analysis of variance, with dose as a between groups factor and time as a within subject factor, was conducted on horizontal activity counts/10 min interval.<br>Michael B Gatch <br>These findings are in agreement with earlier studies showing the synthetic cannabinoids substitute for the discriminative stimulus effects of Δ9-THC (see review by Wiley et al., 2017). Pretreatment times and dose ranges for the drug discrimination assay were selected based on the time of peak depression in the locomotor activity assay in mice. As mentioned previously, short-onset compounds have a greater abuse liability; further, compounds that have fewer adverse effects while they are active are likely to be preferred. All five of the compounds in the present study fully substituted with a pretreatment time of 15 min, suggesting a rapid onset of the discriminative stimulus effects. All of the cathinones fully substituted for the discriminative stimulus effects of Δ9-tetrahydrocannabinol (≥80% drug-appropriate responding). Because response suppression may compromise stimulus control, rats failing to complete at least ten responses during the test session were excluded from the analysis of the discriminative stimulus effects of that dose of test compoun<br><br><br>This might be due to the low activity of numerous metabolizing enzymes resulting in lower drug biotransformation . HepG2 model detected the major ester hydrolysis metabolite of 4F-MDMB-BINACA in abundance but the rest of the metabolites were found in a small amount. Elegans and HLM models detected all of the in-vivo metabolites (100%), whilst HepG2 cells detected 7 out of the 8 in-vivo metabolites (87.5%). Hence, structural elucidation could not be confirmed unless a reference standard is made availabl<br><br><br>As synthetic cannabinoid receptor agonists (SCRA) are gaining popularity globally, clinicians have to understand that intoxication caused by vaping SCRA is not detected by commonly available tests. He confirmed that he had been vaping an electronic cigarette (e-cigarette) earlier that day just before the onset of his symptoms. Metabolic acidosis (1/3, 0/7) and respiratory acidosis (1/3, 0/7), All 10 patients recovered with supportive care, including intubation and ventilation for one case. In 3 cases ADB-BUTINACA was the only substance detected, while in seven other substances of misuse were also detected including other SCRA, opioids, benzodiazepines cocaine and pregabali<br><br>Despite the relatively high % peak area ratio and detection in 16/20 urine samples, ester hydrolysis followed by monohydroxylation at the tert-leucine moiety (m/z 366, B8) metabolite was not reported among the 17 urine samples from the forensic psychiatric ward and prison in Haschimi et al.’s study<br><br><br>LC separates the urine or blood sample and QTOF-MS provides high-resolution and accurate mass measurements for precise identification and structural elucidation of compounds. The LC-QTOF-MS method offers a more comprehensive and sensitive approach for drug detection, covering hundreds of recreational drugs, including NPS. Besides increasing the temperature to enlarge the drug aerolisation and bioavailability, one can elevate the flow rate of air through the e-cigarette and/or add a diluent . Of all e-cigarette users registered at this forum, 7.8 % vaped SCRAs . About 15 % of individuals registered at forums for drug users such as erowid.org who vaped cannabis have also vaped SRCAs. SCRAs belong, together with synthetic opioids, cathinones, amphetamines and hallucinogens to the new psychoactive substances (NPS) that are currently developed at high speed.<br>Data availabili<br><br><br>Observation item 1st injection 2nd injection 3rd injection 4th injection 5th injection Con. All groups treated with tested synthetic cannabinoids showed decreased weight gain rate in a dose-dependent manner. A total of 5 mice in the JWH-081 (5 mg/kg, i.p.) treated group and 6 mice in the adb butinaca JWH-210 (5 mg/kg, i.p.) treated group showed loss of traction, of which 4 and 5 showed tremor, respectively. Memory retention was measured after the memory acquisition was tested as a probe trial.<br>About Powder JWH-2<br><br><br>Product ions detected at m/z 302, 217, and 145 (B2) confirmed that tert-leucine and indazole moieties remained unchanged, leading to the structure elucidation of a hydroxy-functional group at the 4-position of the butyl side chain by oxidative defluorination. The product ion m/z 336 (loss of methyl ester moiety) further confirmed the presence of dihydroxylated metabolites. The precursor ion, m/z 364 (B14, B5/B6) had a loss of 2 Da from m/z 366 indicated further dehydrogenation of the ester hydrolysis plus monohydroxylated metabolites. The presence of the product ion m/z 320, likely formed from a loss of carbon dioxide, indicated monohydroxylation at the tert-leucine in B8 (m/z 219), butyl side chain in B9 (m/z 145) and indazole moiety in B13 (m/z 161). The precursor ion, m/z 350 showed a loss of 14 Da explaining the hydrolysis of methyl ester from 4F-MDMB-BINACA.<br>Fig. 2. <br>The precursor ion m/z 396 (B10, B12/B15) was 32 Da higher than the parent drug, 4F-MDMB-BINACA, suggesting the addition of two hydroxy groups. All the below explanations for transformations into metabolites are based on the data shown in Fig. Metabolites were identified according to their precursor ions, product ions, and fragmentation patterns (Fig. 1). Traditional in-vivo metabolism studies to generate human metabolites of drugs relied heavily on the use of whole animal model systems, which are expensive, limited by drug administration amount, influenced by species variation and faced by many ethical issues. Eight in-vivo metabolites tentatively identified were mainly products of ester hydrolysis with or without additional dehydrogenation, N-dealkylation, monohydroxylation and oxidative defluorination with further oxidation to butanoic acid.<br>Fig. 1. <br>Monitoring metabolism of synthetic cannabinoid 4F-MDMB-BINACA via high-resolution mass spectrometry assessed in cultured hepatoma cell line, fungus, adb butinaca liver microsomes and confirmed using urine samples The threshold for fatal overdose of combined use of SCRAs and ethanol can be estimated as a little ng/mL (0.37–4.1 ng/mL according to the reported cases) of SCRA and 1.5–2.5 g/L of ethanol. The reported cases and reviews of the scientific literature suggest a possible synergistic effect between SCRAs and ethanol, because their combined use clearly increases their toxicity. The victim died due to severe necrotizing pancreatitis and acute kidney injury evolving into multi-organ failure 11 days after hospital admission . Studies have found no unequivocal synergistic effect between THC and ethanol at low or moderate ethanol doses [29, 30], but no data on high doses of ethanol are available. Given that THC and ethanol act on the same receptors, data on their simultaneous use may yield important insights in this regard.<br>Fungus C. elegans <br>Methyl (2S)-2-([1-(4-fluorobutyl)-1H-indazole-3-carbonyl]amino)-3,3-dimethylbutanoate (4F-MDMB-BINACA, 4F-MDMB-BUTINACA or 4F-ADB), found in numerous SCB product seizures, has been reported by various law enforcement since 2018 . However, most of the SCBs are full agonists at CB1 and CB2 receptors, having a higher risk of undesirable side effects when compared to THC which is a partial agonist . Synthetic cannabinoids (SCBs) are agonists at cannabinoid receptor type 1 (CB1) and type 2 (CB2), where they elicit their main effect

← Nächstältere Version		Version vom 24. Mai 2026, 07:12 Uhr
Zeile 1:		Zeile 1:
−	~~All~~ of ~~the compounds tested in the present study depressed locomotor activity as is typical for other synthetic cannabinoids~~ (~~see review by Wiley et al~~., ~~2017~~). ~~Average horizontal activity counts/10 min as a function~~ of time (~~10 min bins~~) and ~~dose~~. ~~Depressant effects~~ of ~~1.33 mg/kg were observed within 10 min following administration and peak depressant effects were JWH~~-~~210 powder observed between 0–30 min. Duration~~ of the ~~locomotor depression increased over dose from 30 min following 0~~.~~1 mg~~/~~kg to 2~~.~~5 h following 1 mg~~/~~k<br><br><br>Some mice showed abnormal behaviors~~ (~~catalepsy~~, ~~loss of traction~~, ~~convulsion~~) ~~right after~~ the ~~administration~~ of the ~~tested~~ substances. The ~~locomotor activity of~~ the ~~mice was measured 30 min and 2 hrs after the last substance administration~~. ~~We also examined their neurotoxicity using brain samples through histopathological diagnose, especially~~ in the ~~nucleus accumbens core region~~. ~~In histopathological analysis, neural cells of~~ the ~~animals treated with~~ the ~~high dose (5 mg/kg)~~ of ~~JWH~~-~~081 or JWH~~-~~210 showed distorted nuclei and nucleus membranes~~ in ~~the core shell of nucleus accumbens~~, ~~suggesting neurotoxicity~~.<br>~~Table of Conten~~<br><br>The ~~findings produce an apparent paradox~~, ~~since CPP~~ and ~~self~~-~~administration predict~~ with ~~high reliability~~ the ~~likelihood~~ that ~~a compound will be abused by humans, and cannabinoids~~ are ~~well-known to produce active drug-seeking in human~~<br><br><br>~~These synthetic cannabinoids act directly at cannabinoid CB1 and CB2 receptors as does Δ9~~-~~tetrahydrocannabinol (Δ9~~-~~THC) found~~ in ~~marijuana, but have different chemical structures unrelated to Δ9~~-~~THC, different metabolism,~~ and ~~often greater toxicity (Fantegrossi et al.~~, ~~2014). Discriminative stimulus effects~~ were ~~tested~~ in ~~rats trained~~ to ~~discriminate Δ9-tetrahydrocannabinol (3 mg/kg~~, ~~30-min pretreatment)~~. ~~5F-MDMB-PINACA (also~~ known ~~as 5F~~-~~ADB~~, ~~5F-ADB-PINACA~~), ~~MDMB~~-~~CHIMICA, MDMB-FUBINACA, ADB-FUBINACA~~, and ~~AMB-FUBINACA~~ (~~also known as FUB-AMB, MMB-FUBINACA~~) ~~were tested for in vivo cannabinoid-like effects~~ to ~~assess their abuse liabilit<br><br>In case~~ of ~~cannabis or Δ9-tetrahydrocannabinol~~, ~~there are many previous studies regarding with their dependence potential and neurotoxicity (Cororan~~, ~~et al.~~, ~~1974; Harris~~, ~~et al~~., ~~1974; Leite~~ and ~~Culini, 1974; Hutcheson, et al~~.~~, 1998~~<br><br>~~Figure 1.~~ <br>~~Each training session lasted a maximum of 10 min~~, and ~~the rats could earn up to 20 food pellets. Thirty minutes prior~~ to the ~~training sessions, rats received an injection~~ of ~~either vehicle or Δ9~~-~~THC and were subsequently placed in~~ the ~~behavior~~-~~testing chambers~~, ~~where food~~ (~~45-mg food pellets; Bio-Serve~~, ~~Frenchtown, NJ~~) ~~was available as~~ a ~~reinforcer for every ten responses (FR10) on a designated injection appropriate lever~~. ~~A houselight was centered over~~ the ~~hopper close to~~ the ~~ceiling and was illuminated only when the levers were active. Each dose range included doses that were without effect to those producing at least 50% depression compared to vehicle control. Twenty~~-~~four male Sprague-Dawley rats were obtained from Envigo~~ (~~Houston~~, TX). ~~Male ND4 Swiss–Webster mice were obtained from Envigo (Houston~~, ~~TX) at approximately 8 weeks~~ of ~~age and maintained in~~ the ~~University~~ of ~~North Texas Health Science Center (UNTHSC) animal facility for two weeks prior to testin~~<br><br>~~<br>A 30~~-~~min period, beginning when maximal depression of locomotor activity first appeared as a function of dose,~~ was ~~used for analysis of dose~~-~~response data and calculation of ED50 values~~. ~~During test sessions, both levers~~ were ~~active, such that ten consecutive responses~~ on ~~either lever led to [https:~~//~~cannabinoidsrc4f-adb.com/ JWH-210 powder] reinforcement~~. The ~~substitution tests occurred only if the rats had achieved 85% injection~~-~~appropriate responding on the two prior training sessions.<br>The locomotor activity assay was used to identify approximate time courses~~ and ~~dose ranges~~ of ~~psychoactive effects, which is useful for identifying parameters for drug discrimination experiments~~ and ~~are also predictive of the time course~~ of the ~~psychoactive effects in human users~~. ~~The purpose of~~ the ~~present study~~ was ~~to assess the abuse liability~~ of 5F-~~MDMB~~-~~PINACA~~, ~~MDMB-CHIMICA, MDMB-FUBINACA, ADB-FUBINACA, and AMB-FUBINACA. Since there is currently no robust measure of the reinforcing/rewarding effects~~ of ~~cannabinoids, drug discrimination is currently~~ the ~~best model for assessing abuse liability of cannabinoids~~. ~~The findings produce~~ an ~~apparent paradox, since CPP and self-administration predict~~ with ~~high reliability the likelihood that~~ a ~~compound will be abused by humans~~, ~~and cannabinoids are well-known to produce active drug-seeking in human~~<br><br>~~<br>Tremors were observed in mice 30 minutes following 1 mg/kg AMB~~-~~FUBINACA~~ in ~~the present study. Pretreatment times~~ and ~~dose ranges~~ for ~~the drug discrimination assay were selected based on the time~~ of ~~peak depression in the locomotor activity assay in mice~~. ~~Average potency of~~ the ~~discriminative stimulus effects~~ of ~~early compounds was 0~~.~~81±0~~.~~17 mg~~/~~kg (Gatch et al~~.~~, 2014), whereas~~ the ~~potency of~~ a ~~recent set was 0~~.~~09±0.03 mg/kg (Gatch et al~~., ~~2018)~~, and the ~~potency of the current set is 0~~.~~05±0~~.~~01 mg/kg. Short~~-~~onset~~, ~~short~~-~~acting compounds have a greater abuse liability~~, ~~and long~~-~~acting compounds pose problems of long~~-~~acting adverse effects and interactions with other drugs~~. ~~The duration of action~~ of the ~~synthetic cannabinoids tested using the 8-h protocol have varied widely~~, ~~with some producing~~ a ~~duration~~ of ~~action no longer than~~ 1 ~~h, others producing a duration of action between 1–2 h,~~ and ~~others lasting more than~~ 2 ~~h. There seems to be a trend of newer synthetic cannabinoids being more potent than earlier compound~~	+	Our findings revealed that both victims consumed large amounts of alcohol preceding their deaths (blood alcohol concentrations (BAC) were 2.11 and 2.49 g/L, respectively). Forensic autopsy of both victims was performed four days after the time of death following the Recommendation No.R (99)3 of the Council of Europe on medico-legal autopsies. Elegans demonstrated the ability to form all of the in-vivo metabolites and has the potential to be used as a complementary model to predict and characterize human metabolites, as well as identifying possible drug toxicities for emerging SCBs. Thus, identification of the relevant urinary markers was based primarily upon the prevalence of the in-vivo metabolites instead of the metabolites ranking that was based upon % peak area abundance ratio. Moreover, genetic makeup, physiological conditions (age, gender [https://cannabinoidsrc4f-adb.com/ adb butinaca] and ethnicity), environmental influences (diet) and pathological factors (liver diseases, diabetes, and obesity) would further complicate the metabolism of drugs. It should be noted that % peak area abundance ratios do not necessarily reflect absolute concentrations due to differences in ionization capacity and matrix effects bias for each metabolite.<br>Data concerning the combined effects of SCRAs and other substances are highly limited, which renders forensic evaluation of possible overdose cases difficult . The threshold SCRA concentration for fatal overdose can be estimated ng/mL level (0.37–4.1 ng/mL according to the reported cases) in cases in which 1.5–2.5 g/L of ethanol is present in the blood. The victims were brothers who were both found deceased after consuming 4F-MDMB-BINACA and ethanol. These confusing shorter names were not scientifically adopted but were used by websites selling the drugs to the public. Monitoring metabolism of synthetic cannabinoid 4F-MDMB-BINACA via high-resolution mass spectrometry assessed in cultured hepatoma cell line, fungus, liver microsomes and confirmed using urine samples. This article does not contain any studies with human participants or animals performed by any of the author<br><br><br>LC separates the urine or blood sample and QTOF-MS provides high-resolution and accurate mass measurements for precise identification and structural elucidation of compounds. The LC-QTOF-MS method offers a more comprehensive and sensitive approach for drug detection, covering hundreds of recreational drugs, including NPS. Besides increasing the temperature to enlarge the drug aerolisation and bioavailability, one can elevate the flow rate of air through the e-cigarette and/or add a diluent . Of all e-cigarette users registered at this forum, 7.8 % vaped SCRAs . About 15 % of individuals registered at forums for drug users such as erowid.org who vaped cannabis have also vaped SRCAs. SCRAs belong, together with synthetic opioids, cathinones, amphetamines and hallucinogens to the new psychoactive substances (NPS) that are currently developed at high speed.<br>Data availabili<br><br><br>Although there were reports on the metabolism of 4F-MDMB-BINACA using in-vivo and various in-vitro models, studies were either conducted using small in-vivo sample size such as 1 to 4 samples [5, 29] or in closed environments such as forensic psychiatric wards and prisons . The hepatic cell line HepG2 is often used as an initial screen as it is known to produce high reproducibility results with relatively stable enzyme concentration, although they are limited by the low-level expression of several metabolizing enzymes, including the cytochrome P450 (CYP) class of proteins [17, 18]. In-vitro metabolism studies are generally used to complement these data using perfused organs, tissue or cell cultures and microsomal preparations amongst which pooled human liver microsomes (HLM) have been frequently used to elucidate metabolism of SCBs [12,13,14,15,16]. Since most SCBs are found extensively in metabolized forms in urine, the identification of metabolites is of vital importance for forensic and clinical toxicologists. Identifying SCB intake and its correlating specific adverse effects require rapid elucidation of these SCBs. The proliferation of SCBs has become a global challenge as new compounds are rapidly introduced into the illegal drug market to evade existing drug laws.<br>Fig. <br><br><br>Product ions detected at m/z 302, 217, and 145 (B2) confirmed that tert-leucine and indazole moieties remained unchanged, leading to the structure elucidation of a hydroxy-functional group at the 4-position of the butyl side chain by oxidative defluorination. The product ion m/z 336 (loss of methyl ester moiety) further confirmed the presence of dihydroxylated metabolites. The precursor ion, m/z 364 (B14, B5/B6) had a loss of 2 Da from m/z 366 indicated further dehydrogenation of the ester hydrolysis plus monohydroxylated metabolites. The presence of the product ion m/z 320, likely formed from a loss of carbon dioxide, indicated monohydroxylation at the tert-leucine in B8 (m/z 219), butyl side chain in B9 (m/z 145) and indazole moiety in B13 (m/z 161). The precursor ion, m/z 350 showed a loss of 14 Da explaining the hydrolysis of methyl ester from 4F-MDMB-BINACA.<br>Fig. 2. <br>4F-MDMB-BINACA was hydrolysed via ester hydrolysis forming the 4F-MDMB-BINACA ester hydrolysis metabolite (B22). Data obtained from the twenty urine samples were retrospectively analysed and processed using TraceFinder software based on the identification criteria of mass errors less than ± 5 ppm for full MS peaks and MS/MS peaks from the theoretical mass and matching of MS/MS spectra. The mixture was vortex-mixed and 500 µL of this mixture and 500 µL of methanol were loaded onto the Clean Screen FASt® tube. After incubation, the mixture was cooled at room temperature, and 150 µL of purified water was added. High-resolution QTOF-MS data were acquired on an Agilent 6510 Accurate Mass QTOF mass spectrometer (Agilent Technologies) equipped with dual electrospray ionization (ESI) source operated in both positive and negative ion modes, to determine accurate masses of the metabolites. Chromatographic separation was performed on an Agilent 1290 LC system with a Poroshell 120 EC-C18 analytical column (2.7 μm, 75 × 2.1 mm; Agilent Technologies, Santa Clara, CA, USA).<br>Fig. 1. <br>Monitoring metabolism of synthetic cannabinoid 4F-MDMB-BINACA via high-resolution mass spectrometry assessed in cultured hepatoma cell line, fungus, adb butinaca liver microsomes and confirmed using urine samples The threshold for fatal overdose of combined use of SCRAs and ethanol can be estimated as a little ng/mL (0.37–4.1 ng/mL according to the reported cases) of SCRA and 1.5–2.5 g/L of ethanol. The reported cases and reviews of the scientific literature suggest a possible synergistic effect between SCRAs and ethanol, because their combined use clearly increases their toxicity. The victim died due to severe necrotizing pancreatitis and acute kidney injury evolving into multi-organ failure 11 days after hospital admission . Studies have found no unequivocal synergistic effect between THC and ethanol at low or moderate ethanol doses [29, 30], but no data on high doses of ethanol are available. Given that THC and ethanol act on the same receptors, data on their simultaneous use may yield important insights in this regard.<br>Fungus C. elegans <br>Methyl (2S)-2-([1-(4-fluorobutyl)-1H-indazole-3-carbonyl]amino)-3,3-dimethylbutanoate (4F-MDMB-BINACA, 4F-MDMB-BUTINACA or 4F-ADB), found in numerous SCB product seizures, has been reported by various law enforcement since 2018 . However, most of the SCBs are full agonists at CB1 and CB2 receptors, having a higher risk of undesirable side effects when compared to THC which is a partial agonist . Synthetic cannabinoids (SCBs) are agonists at cannabinoid receptor type 1 (CB1) and type 2 (CB2), where they elicit their main effect