3-methoxymorphinan 3-methoxymorphinan 3-methoxymorphinan is a levomethorphan metabolite that has been shown to produce local anesthetic effects. it is the cyp3a4 metabolite of dextromethorphan, and is itself metabolized by the liver enzyme cyp2d6. not to be confused with dextrorphan, dextromethorphan, or levomethorphan. 3-methoxymorphinanlegal statuslegal status us: uncontrolled identifierscas number1531-25-5 npubchem cid5484286chemspider10207434 yunii497wv2ey4techa infocard100.014.764 chemical and physical dataformulac17h23nomolar mass257.377 g·mol−1 inchi inchi=1s/c17h23no/c1-19-13-6-5-12-10-16-14-4-2-3-7-17(14,8-9-18-16)15(12)11-13/h5-6,11,14,16,18h,2-4,7-10h2,1h3/t14-,16+,17+/m0/s1 ykey:ilnswvuxapspeh-usxijharsa-n y ny (what is this?) (verify)