9-Nor-9β-hydroxyhexahydrocannabinol

9-Nor-9β-hydroxyhexahydrocannabinol (9-nor-9beta-HHC; sometimes incorrectly confused with 11-nor-9β-hydroxyhexahydrocannabinol) is a cannabinoid first discovered from early modifications to the structure of THC, in a search for the simplest compound that could still fulfill the binding requirements to produce cannabis-like activity. 11-Hydroxyhexahydrocannabinol is the structurally related methylene homologue of 11-nor-9β-hydroxyhexahydrocannabinol that has been found as a minor active metabolite of tetrahydrocannabinol, and also a metabolite of the trace cannabinoid hexahydrocannabinol.

Source: Wikipedia — 9-Nor-9β-hydroxyhexahydrocannabinol (CC BY-SA 4.0)