Synonyms: (S)-2-(((3R,4R)-4-(3-Hydroxyphenyl)-3,4-dimethylpiperidin-1-yl)methyl)-3-phenylpropanoic acid methyl ester hydrochloride;(S)-2-benzyl-3-[(3R,4R)-4-(3-Hydroxyphenyl)-3,4-diMethylpiperidin-1-yl]propanoic acid Methyl ester hydrochloride;1-Piperidinepropanoic acid, 4-(3-hydroxyphenyl)-3,4-diMethyl-α-(phenylMethyl)-, Methyl ester, hydrochloride (1:1), (αS,3R,4R)-;(S)-Methyl 2-benzyl-3-((3R,4R)-4-(3-hydroxyphenyl)-3,4-dimethylpiperidin-1-yl)propanoate hydrochl