Synonyms: Dihydrocodeine Bitartrate [USP];Codeine, dihydro-, tartrate (1:1);DF 118;Dihydrocodeine acid tartrate;Dihydrocodeine bitartrate;NSC 117857;Paracodeine bitartrate;Tuscodin;UNII-8LXS95BSA9;4,5alpha-Epoxy-6alpha-hydroxy-3-methoxy-17-methylmorphinan hydrogen (R-(R*,R*))-tartrate;Codeine, dihydro-, tartrate (1:1) (6CI,7CI);Morphinan-6-alpha-ol, 4,5-alpha-epoxy-3-methoxy-17-methyl-, tartrate (1:1);Morphinan-6-ol, 4,5-epoxy-3-methoxy-17-methyl-, (5alpha,6alpha)-, (R-(R*,R*))-2,3-dihydroxybutanedioate (1:1) (salt) (9CI);Morphinan-6alpha-ol, 4,5alpha-epoxy-3-methoxy-17-methyl-, tartrate (1:1) (salt) (8CI);(5alpha,6alpha)-3-methoxy-17-methyl-4,5-epoxymorphinan-6-ol