Synonyms: 1,6-Methano-1H-4-benzazonin-10-ol,2,3,4,5,6,7-hexahydro-1,4-dimethyl-, hydrobromide, (1S)-;1,6-Methano-1H-4-benzazonin-10-ol, 2,3,4,5,6,7-hexahydro-1,4-dimethyl-,hydrobromide, (1S,6S)- (9CI); (-)-NIH 9614; (-)-ST 2121; Eptazocinehydrobromide; MCV 4169; ST 2121; ST 2121, (-)-; l-ST 2121