5F-AMB (also known as 5F-MMB-PINACA and 5F-AMB-PINACA) is an indazole-based synthetic cannabinoid from the indazole-3-carboxamide family, which has been used as an active ingredient in synthetic cannabis products. It was first identified in Japan in early 2014. Although only very little pharmacological information about 5F-AMB itself exists, its 4-cyanobutyl analogue (instead of 5-fluoropentyl) has been reported to be a potent agonist for the CB1 receptor (KI = 0.7 nM).
5F-AMB intoxication caused one fatality on its own and another one through ketoacidosis in combination with AB-CHMINACA, AB-FUBINACA, AM-2201, 5F-APINACA, EAM-2201, JWH-018, JWH-122, MAM-2201, STS-135 and THJ-2201 and another fatality in combination with AB-CHMINACA and Diphenidine.
5F-AMB is an novelty analogue of AB-PINACA with a systematic name of (R)-methyl 2-(1-(5-fluoropentyl)-1H-indazole-3-carboxamido)-3-methylbutanoate. The chemical formula for 5F-AMB is C19H26FN3O3 with a molecular weight of 363.43 and an exact mass of 363.20.
3,4-Methylenedioxypyrovalerone (also known as MDPV, NRG-1, and imprecisely as Bath Salts, among many others) is a novel, extremely potent synthetic stimulant substance of the cathinone and pyrrolidine chemical classes that produces states of extreme stimulant euphoria, disinhibition, and sexual arousal when administered. MDPV is thought to act primarily as as a norepinephrine-dopamine reuptake inhibitor (NDRI) and possesses powerful euphoric stimulant qualities. It was first developed in the 1960s by a team at Boehringer Ingelheim.
MDPV remained an obscure stimulant until around 2004, when it was reportedly first made available to the public as a designer drug. Products labeled as “bath salts” containing MDPV were previously sold as recreational drugs in gas stations and convenience stores in the United States, similar to the marketing strategy of Spice and K2 as incense.
Historical reports show records of the preparation of MDPV for potential use as a CNS stimulant. It was claimed to have potential to be an alternative for racemic amphetamine and, although showing some desirable qualities such as reduced toxicity as compared to amphetamine, MDPV was chosen to not be developed as a medicinal drug.