ADB-FUBINACA

ADB-FUBINACA is a designer drug identified in synthetic cannabis blends in Japan in 2013.[1] In 2018, it was the third-most common synthetic cannabinoid identified in drugs seized by the Drug Enforcement Agency.[2]

ADB-FUBINACA
Legal status
Legal status
  • CA: Schedule II
  • DE: Anlage II (Authorized trade only, not prescriptible)
  • US: Schedule I
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
Chemical and physical data
FormulaC21H23FN4O2
Molar mass382.43 g/mol g·mol−1
3D model (JSmol)

The (S)-enantiomer of ADB-FUBINACA is described in a 2009 Pfizer patent[3] and has been reported to be a potent agonist of the CB1 receptor and the CB2 receptor with EC50 values of 1.2 nM and 3.5 nM, respectively.[3][4] ADB-FUBINACA features a carboxamide group at the 3-indazole position, like SDB-001 and STS-135. ADB-FUBINACA appears to be the product of rational drug design, since it differs from AB-FUBINACA only by the replacement of the isopropyl group with a tert-butyl group.

An analogue of ADB-FUBINACA, ADSB-FUB-187, containing a more functionalized carboxamide substituent was recently reported.

Side effects

One death through coronary arterial thrombosis has been linked to ADB-FUBINACA intoxication.[5]

At least an additional 8 deaths in Hungary in 2015 are linked to the usage of this material, all deaths were youngsters below 21.

Metabolism

Twenty-three ADB-FUBINACA major metabolites were identified in several incubations with cryopreserved human hepatocytes. Major metabolic pathways were alkyl and indazole hydroxylation, terminal amide hydrolysis, subsequent glucuronide conjugations, and dehydrogenation.[6]

Legality

In the United States, ADB-FUBINACA is a Schedule I controlled substance.[7]

See also

References
  1. Uchiyama, N.; Matsuda, S.; Kawamura, M.; Kikura-Hanajiri, R.; Goda, Y. (July 2013). "Two new-type cannabimimetic quinolinyl carboxylates, QUPIC and QUCHIC, two new cannabimimetic carboxamide derivatives, ADB-FUBINACA and ADBICA, and five synthetic cannabinoids detected with a thiophene derivative α-PVT and an opioid receptor agonist AH-7921 identified in illegal products". Forensic Toxicology. 31 (2): 223–240. doi:10.1007/s11419-013-0182-9.
  2. "Emerging Threat Report: Annual 2018" (PDF). Special Testing and Research Laboratory, Drug Enforcement Administration.
  3. WO 2009106982, "Indazole Derivatives"
  4. Samuel D Banister; Michael Moir; Jordyn Stuart; Richard C Kevin; Katie E Wood; Mitchell Longworth; Shane M Wilkinson; Corinne Beinat; Alxendra S Buchanan; Michelle Glass; Mark Connor; Iain S McGregor; Michael Kassiou (July 2015). "The pharmacology of indole and indazole synthetic cannabinoid designer drugs AB-FUBINACA, ADB-FUBINACA, AB-PINACA, ADB-PINACA, 5F-AB-PINACA, 5F-ADB-PINACA, ADBICA and 5F-ADBICA". ACS Chemical Neuroscience. 6 (9): 1546–1559. doi:10.1021/acschemneuro.5b00112. PMID 26134475.
  5. Kevin G. Shanks; William Clark; George Behonick (April 2016). "Death Associated With the Use of the Synthetic Cannabinoid ADB-FUBINACA". Journal of Analytical Toxicology. 40 (3): 236–239. doi:10.1093/jat/bkv142. PMC 4885918. PMID 26755539.
  6. Jeremy Carlier; Xingxing Diao; Ariane Wohlfarth; Karl Scheidweiler; Marilyn A. Huestis (November 2016). "In Vitro Metabolite Profiling of ADB-FUBINACA, A New Synthetic Cannabinoid". Current Neuropharmacology. 15 (5): 682–691. doi:10.2174/1570159X15666161108123419. PMC 5771045. PMID 29403341.
  7. "Schedules of Controlled Substances: Temporary Placement of Six Synthetic Cannabinoids (5F-ADB, 5F-AMB, 5F-APINACA, ADB-FUBINACA, MDMB-CHMICA and MDMB-FUBINACA) Into Schedule I". Drug Enforcement Administration.
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