AKB48 is a pentyl indazole with structural similarity to JWH 018 adamantyl carboxamide and STS-135 , which are synthetic cannabinoids that may be sold for recreational use. AKB48 N-(4-hyroxypentyl) metabolite is an expected phase 1 metabolite of AKB48, based on the known metabolism of similar compounds. This product is intended for research and forensic applications.