EINECS 259-711-1, LS-7725, Tilidine fumarate, ethyl (1S,2R)-2-(dimethylamino)-1-phenylcyclohex-3-ene-1-carboxylate (2E)-but-2-enedioate, 3-Cyclohexene-1-carboxylic acid, 2-(dimethylamino)-1-phenyl-, ethyl ester, trans-(+-)-, (E)-2-butenedioate (1:1), trans-(1)-(2-(Ethoxycarbonyl)-2-phenylcyclohex-5-enyl)dimethylammonium hydrogen fumarate