CAS:40216-83-9 Molecular Formula:C6H12 NPO 3 Molecular Luj:181.62 ib EINECS:609-795-4 ib Synonyms:H-HYP-OME HCL; HL-HYP-OME HCL; HYDROXYPROLINE-OME HCL (2S,4R)-trans-4-hydroxy-L-proline methyl ester hydrochloride; 4-hydroxy-2-pyrrolidinecarboxylic acid methyl ester hydrochloride