8,11-dihydroxytetrahydrocannabinol 8,11-dihydroxytetrahydrocannabinol 8,11-dihydroxytetrahydrocannabinol (8β,11-dioh-δ9-thc) is an active metabolite of thc, the main active component of cannabis. the 8β enantiomer retains psychoactive effects in animal studies with only slightly lower potency than thc, while the 8α enantiomer is much weaker. both enantiomers have a shorter half-life in the body than 11-hydroxy-thc, making 8,11-dihydroxy-thc potentially useful for drug testing to distinguish between recent cannabis use and use longer in the past. 8,11-dihydroxytetrahydrocannabinolidentifiers iupac name (6ar,8r,10ar)-9-(hydroxymethyl)-6,6-dimethyl-3-pentyl-6a,7,8,10a-tetrahydrobenzochromene-1,8-diol cas number36913-21-0 npubchem cid101993955chemspider130500comptox dashboard (epa)dtxsid80190397 chemical and physical dataformulac21h30o4molar mass346.467 g·mol−13d model (jsmol)interactive image smiles cccccc1cc2oc(c)(c)3c(o)c(=c3c2c(o)c1)co inchi inchi=1s/c21h30o4/c1-4-5-6-7-13-8-18(24)20-15-10-14(12-22)17(23)11-16(15)21(2,3)25-19(20)9-13/h8-10,15-17,22-24h,4-7,11-12h2,1-3h3/t15-,16-,17-/m1/s1key:xtdyiisrnodhht-brwvuggusa-n