Synonyms: N-Boc-Cis-4-Hydroxy-L-proline methyl ester;1,2-Pyrrolidinedicarboxylicacid, 4-hydroxy-, 1-(1,1-dimethylethyl) 2-methyl ester, (2S-cis)-;(2S,4S)-1-tert-Butoxycarbonyl-4-hydroxypyrrolidine-2-carboxylic acid methylester;(2S,4S)-4-Hydroxy-2-(methoxycarbonyl)pyrrolidine-1-carboxylic acidtert-butyl ester;Methyl (4S)-N-Boc-4-hydroxy-L-prolinate;