has role metabolite oxoproline 4-oxoproline 129.043 129.11400 4-Oxoproline 4-oxo-DL-proline 4-oxoproline 4-oxopyrrolidine-2-carboxylic acid C5H7NO3 CHEBI:12041 CHEBI:1923 CHEBI:37011 HFXAFXVXPMUQCQ-UHFFFAOYSA-N InChI=1S/C5H7NO3/c7-3-1-4(5(8)9)6-2-3/h4,6H,1-2H2,(H,8,9) MetaCyc:4-OXOPROLINE OC(=O)C1CC(=O)CN1 PMID:22770225 Reaxys:82136 The 4-isomer of oxoproline. chebi_ontology