A new pyrazole-carboxamide type synthetic cannabinoid AB-CHFUPYCA [N-(1-amino-3-methyl-1-oxobutan-2-yl)-1-(cyclohexylmethyl)-3-(4-fluorophenyl)-1H-pyrazole-5-carboxamide] identified in illegal products
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A new pyrazole-carboxamide type synthetic cannabinoid, AB-CHFUPYCA (1), was detected in illegal herbal products by our ongoing survey in Japan. The structure of 1 was identified by gas chromatography–mass spectrometry (GC–MS), liquid chromatography–mass spectrometry (LC–MS), liquid chromatography–high-resolution-mass spectrometry (LC–HR-MS) and nuclear magnetic resonance (NMR) analyses. Compound 1 showed a molecular weight of 400, and accurate mass measurement using LC–HR-MS revealed its molecular formula to be C22H29N4O2F. The MS and NMR spectrometric data revealed that the structure of 1 was N-(1-amino-3-methyl-1-oxobutan-2-yl)-1-(cyclohexylmethyl)-3-(4-fluorophenyl)-1H-pyrazole-5-carboxamide. Compound 1, which is a new type of synthetic cannabinoid, has a 3-(4-fluorophenyl)-1H-pyrazole group in place of a 1H-indazole group of AB-CHMINACA. To our knowledge, data on the chemistry and pharmacology of compound 1 have never been reported, and we therefore named compound 1 “AB-CHFUPYCA.”
KeywordsAB-CHFUPYCA [N-(1-amino-3-methyl-1-oxobutan-2-yl)-1-(cyclohexylmethyl)-3-(4-fluorophenyl)-1H-pyrazole-5-carboxamide] Pyrazole-carboxamide derivative Synthetic cannabinoid New psychoactive substance Illegal product Drug of abuse
A portion of this work was supported by a Health and Labor Sciences Research Grant from the Ministry of Health, Labour, and Welfare, Japan.
Conflict of interest
There are no financial or other relations that could lead to a conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
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