Comprehensive analytical and structural characteristics of methyl 3,3-dimethyl-2-(1-(pent-4-en-1-yl)-1H-indazole-3-carboxamido)butanoate (MDMB-4en-PINACA) Posted on February 3, 2022February 3, 2022 By Becky Carter Michal P. Dybowski, Piotr Holowinski, Rafal Typek & Andrzej L. Dawidowicz Forensic Toxicol; 39; 2021 Access article Chemistry, Seized Drugs/Controlled Substances, Toxicology