Isobutyl 1-Pentyl-1H-indazole-3-carboxylate RM is a compound recently identified in cannabinoid mixtures in Japan. It is a derivative of NNEI 2’-indazole isomer (N632100), an analog of JWH 018 (P283650), the 18th compound synthesized in a series of more than 470 analogs and metabolites of ∆9-Tetrahydro- cannabinol (THC) (T293200)