In Vitro Metabolic Profiling of 18 Semi-Synthetic Cannabinoids—Hexahydrocannabinol (HHC) and Its Analogs—with Identification in an Authentic Hexahydrocannabiphorol (HHCP) Urine Sample

The revealed structure-metabolism relationship could serve as a reference for investigating the metabolism of similar cannabinoids, while the identified biomarkers could facilitate drug testing.