Delta-8 tetrahydrocannabinolDelta-8 THC

Delta-8 tetrahydrocannabinol shares the molecular formula C21H30O2 with delta-9 tetrahydrocannabinol. The two differ only in the position of one double bond, which is what the delta number denotes.

It occurs in the plant in small proportions. Because it and delta-9 are isomers, analytical separation on a certificate of analysis relies on chromatography that resolves the two closely related molecules.