am-905 am-905 am-905 (part of the am cannabinoid series) is an analgesic drug which is a cannabinoid agonist. it is conformationally restricted by virtue of the double bond on its side chain, leading an increased affinity for and selectivity between cb1 and cb2 receptors. it is a potent and reasonably selective agonist for the cb1 cannabinoid receptor, with a ki of 1.2 nm at cb1 and 5.3 nm at cb2. am-905identifiers iupac name (6ar,9r,10ar)-3--9-(hydroxymethyl)-6,6-dimethyl-6a,7,8,9,10,10a-hexahydrobenzochromen-1-ol cas number181139-62-8 ypubchem cid9998522chemspider8174103 yuniitj6jd73j07chemblchembl127848 ychemical and physical dataformulac23h34o3molar mass358.522 g·mol−13d model (jsmol)interactive image smiles ccccc/c=c/c(cc1o)cc(oc(c)(c)c2cc3)c1c2cc3co inchi inchi=1s/c23h34o3/c1-4-5-6-7-8-9-16-13-20(25)22-18-12-17(15-24)10-11-19(18)23(2,3)26-21(22)14-16/h8-9,13-14,17-19,24-25h,4-7,10-12,15h2,1-3h3/b9-8+/t17-,18-,19-/m1/s1 ykey:njikrwbguiykjm-okmmtomjsa-n y (verify)