(5alpha)-7,8-Didehydro-4,5-epoxy-3-hydroxy-17-methylmorphinan-6-one 4-27-00-03599 (Beilstein Handbook Reference) 467-02-7 BRN 0042464 Didehydro-4,5-alpha-epoxy-3-hydroxy-17-methylmorphinan-6-one EINECS 207-384-0 Morphinan-6-one, 7,8-didehydro-4,5-epoxy-3-hydroxy-17-methyl-, (5-alpha)- Morphinone