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We identified four cannabimimetic indazole and indole derivatives in new illegal psychoactive substances seized from a clandestine laboratory in China. These four derivatives included N -(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-benzyl-1 H -indazole-3-carboxamide (ADB-BINACA, 1 ), N -(1-amino-3-methyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1 H -indole-3-carboxamide (AB-FUBICA, 2 ), N -(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1 H -indole-3-carboxamide (ADB-FUBICA, 3 ), and N -(1-amino-3-methyl-1-oxobutan-2-yl)-1-benzyl-1 H -indole-3-carboxamide (AB-BICA, 4 ). These compounds were identified by liquid chromatography-high-resolution mass spectrometry, gas chromatography-mass spectrometry, and nuclear magnetic resonance spectroscopy. No chemical or pharmacological data about compound 4 has appeared until now, making this the first report on this compound. Compounds 1 , 2 , and 3 have previously been reported to have a high affinity for cannabinoid CB 1 and CB 2 receptors, but this is the first report of their presence in illegal products.

forensic toxicology

Four types of cannabimimetic indazole and indole derivatives, ADB-BINACA, AB-FUBICA, ADB-FUBICA, and AB-BICA, identified as new psychoactive substances