Acidic in vivo metabolites of cannabinol isolated from rat faeces

Abstract
Six acidic metabolites were isolated from rat faeces and identified by gas chromatography-mass spectrometry and proton magnetic resonance. Cannabinol-7-oic acid was the most abundant acidic metabolite isolated. Others present in decreasing order of prominence were 1″-hydroxy-, 4”-hydroxy-, 3″-hydroxycannabinol-7-oic acid, cannabinol-3”-one-7-oic acid and 2″-hydroxycannabinol-7-oic acid.