17-(Cyclopropylmethyl)-4,5-epoxymorphinan-3,6beta,14-triol 49625-89-0 6alpha-Hydroxynaltrexone 6alpha-Naltrexol 6beta-Hydroxynaltrexone 6beta-Naltrexol Morphinan-3,6,14-triol, 17-(cyclopropylmethyl)-4,5-epoxy-, (5alpha,6beta)- N-Cyclopropylmethyl-7,8-dihydro-14-hydroxynorisomorphine beta-Naltrexol