Cannabigerolic acid (CBGA)
Molecular Formula: C22H32O4
Image credit: PubChem
CBGA is a direct precursor to THCA.
CBGA is the product of the alkylation of olivetolic acid with geranyl pyrophosphate by an enzyme called geranylpyrophosphate:olivatolate geranyltransferase.
Prenylation of olivetolate by a hemp transferase yields cannabigerolic acid, the precursor of tetrahydrocannabinol
Monika Fellermeier, Meinhart H Zenk
Lehrstuhl für Pharmazeutische Biologie, Ludwig-Maximilians-Universität München, D-80333 München, Germany
doi:10.1016/S0014-5793(98)00450-5