9-hydroxyhexahydrocannabinol 9-hydroxyhexahydrocannabinol 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, and retains activity in animal studies though with only around 1/10 the potency of δ9-thc, with the 9α- and 9β- enantiomers having around the same potency. 9-hydroxyhexahydrocannabinolidentifiers iupac name (6ar,10ar)-6,6,9-trimethyl-3-pentyl-7,8,10,10a-tetrahydro-6ah-benzochromene-1,9-diol cas number36028-45-2 52522-56-2pubchem cid71579182chemspider148443chemical and physical dataformulac21h32o3molar mass332.484 g·mol−13d model (jsmol)interactive image smiles cccccc1=cc(=c2c3cc(ccc3c(oc2=c1)(c)c)(c)o)o inchi inchi=1s/c21h32o3/c1-5-6-7-8-14-11-17(22)19-15-13-21(4,23)10-9-16(15)20(2,3)24-18(19)12-14/h11-12,15-16,22-23h,5-10,13h2,1-4h3/t15-,16-,21?/m1/s1key:ksgrdifqzvurif-blrykzmtsa-n