英文别名trans-N-Benzyloxycarbonyl 3-Hydroxy-2-(2-oxopropyl)piperidine; (2R,3S)-rel-3-Hydroxy-2-(2-oxopropyl)-1-piperidinecarboxylic Acid PhenylMethyl Ester; 1-Piperidinecarboxylic acid, 3-hydroxy-2-(2-oxopropyl)-, phenylmethyl ester, (2R,3S)-rel-; Ambroxol Impurity 64; Benzyl (2R,3S)-3-hydroxy-2-(2-oxopropyl)-1-piperidinecarboxylate 
