BOC-L-Hydroxyproline methyl ester Product NameBOC-L-Hydroxyproline methyl esterN-Boc-trans-4-Hydroxy-L-proline methyl ester N-(tert-Butoxycarbonyl)-trans-hydroxy-L-proline methyl ester CAS #74844-91-0MFC11H19NO5MW245.27Appearance White Crystalline Powder mp92-96°CAssay 99%(min)Specific rotation [20/D] -62 68°(c=1,chloroform)