delta-3-tetrahydrocannabinol delta-3-tetrahydrocannabinol delta-3-tetrahydrocannabinol (delta-3-thc, δ3-thc, δ6a(10a)-thc, ea-1477) is a synthetic isomer of tetrahydrocannabinol, developed during the original research in the 1940s to develop synthetic routes to the natural products δ8-thc and δ9-thc found in the cannabis plant. while the normal trans configuration of thc is in this case flattened by the double bond, it still has two enantiomers as the 9-methyl group can exist in an (r) or (s) conformation. the (s) enantiomer has similar effects to δ9-thc though with several times lower potency, while the (r) enantiomer is many times less active or inactive, depending on the assay used. it has been identified as a component of vaping liquid products. delta-3-tetrahydrocannabinolidentifiers iupac name (9s)-6,6,9-trimethyl-3-pentyl-7,8,9,10-tetrahydrobenzochromen-1-ol cas number95720-02-8 y 7663-50-5 (racemic)pubchem cid71587360chemspider32700761uniipyi73uay3kcomptox dashboard (epa)dtxsid40241935 chemical and physical dataformulac21h30o2molar mass314.469 g·mol−13d model (jsmol)interactive image smiles cccccc1=cc(=c2c3=c(cc(c3)c)c(oc2=c1)(c)c)o inchi inchi=1s/c21h30o2/c1-5-6-7-8-15-12-18(22)20-16-11-14(2)9-10-17(16)21(3,4)23-19(20)13-15/h12-14,22h,5-11h2,1-4h3/t14-/m0/s1key:nebznjdfipbxcs-aweznqclsa-n