5-O-Ethyldihydromorphine 7505-40-0 Dihydromorphine alcoholic ethyl ether Morphinan-3-ol, 4,5-alpha-epoxy-6-alpha-ethoxy-17-methyl- Morphinan-3-ol, 4,5-epoxy-6-ethoxy-17-methyl-, (5alpha,6alpha)- (9CI) Morphinan-3-ol, 4,5alpha-epoxy-6alpha-ethoxy-17-methyl- Morphine, 5-O-ethyldihydro- NSC 404369