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Hexahydrocannabinol (HHC) is a hydrogenated derivative of tetrahydrocannabinol (THC). It is a naturally occurring phytocannabinoid that has rarely been identified as a trace component in Cannabis sativa, [1] [2] but can also be produced synthetically by firstly acid cyclization of cannabidiol and then hydrogenation of tetrahydrocannabinol.
HHC-P is a partial agonist of the CB1 receptors with an EC50 of 44.4nM for 9R-HHCP and 134nM for 9S-HHCP. Compared to Hexahydrocannabinol (HHC) with an EC50 of 101nM for 9R-HHC and 1,190nM for 9S-HHC [5] In 2021, HHC-P was positively identified in multiple retail electronic vaping products in the United States.
9-Nor-9β-hydroxyhexahydrocannabinol (9-nor-9beta-HHC; sometimes incorrectly confused with 11-nor-9β-hydroxyhexahydrocannabinol [1]) 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.
9-Hydroxyhexahydrocannabinol (9-OH-HHC) is a semi-synthetic derivative of tetrahydrocannabinol. It is formed as an impurity in the synthesis of Delta-8-THC , [ 1 ] and retains activity in animal studies though with only around 1/10 the potency of Δ 9 -THC, with the 9α- and 9β- enantiomers having around the same potency.
Some U.S. schools are shortening their schedules in hopes of solving staffing shortages, but experts worry about learning loss that can occur when classroom time is cut back.
HHCP-O-acetate (HHCPO, HHCP-O) is a semi-synthetic derivative of tetrahydrocannabiphorol (THCP) derived in several steps by hydrogenation to hexahydrocannabiphorol (HHCP) followed by acetylation of the OH group.
Four stereoisomers of 8-OH-HHC arise from C8-hydroxylation of hexahydrocannabinol. There are four possible 8-OH-HHC metabolites arising from naturally derived HHCs: cis-and trans-8-OH-9α-HHC & cis-and trans-8-OH-9β-HHC. All four have been prepared synthetically to probe stereochemical effects on cannabinoid biological activity. [5]
The 11-OH-9β-HHC isomer is the structurally related methylene homologue of 11-Nor-9β-hydroxyhexahydrocannabinol also known as 9-Nor-9β-hydroxyhexahydrocannabinol. [ 8 ] [ 9 ] HU-243 is a synthetic analog of 11-OH-9β-HHC in which the natural n -pentyl side chain is replaced with a geminal- dimethylheptyl substitution.