Synonyms: Tonazocine mesylate;Win-421562;(±)-1-[(2R*,6S*,11S*)]-1,2,3,4,5,6-Hexahydro-8-hydroxy-3,6,11-trimethyl-2,6-methano-3-benzazocin-11-yl)-3-octanone methanesulfonate (salt);(±)-(2R*,6S*,11S*)-1,2,3,4,5,6-Hexahydro-8-hydroxy-3,6,11-trimethyl-11-(3-oxo-1-octyl)-2,6-methano-3-benzazocine methanesulfonate (salt);1-(8-hydroxy-3,6,11-trimethyl-1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocin-11-yl)octan-3-one methanesulfonate (1:1)