is conjugate base of 5-oxoproline alpha-amino-acid anion 5-oxoprolinate 128.035 128.10600 5-oxoprolinate anion 5-oxoproline 5-oxopyrrolidine-2-carboxylate 5-oxopyrrolidine-2-carboxylate Beilstein:4135383 C5H6NO3 CHEBI:57606 Gmelin:327019 InChI=1S/C5H7NO3/c7-4-2-1-3(6-4)5(8)9/h3H,1-2H2,(H,6,7)(H,8,9)/p-1 ODHCTXKNWHHXJC-UHFFFAOYSA-M Pyroglutamate The conjugate base of 5-oxoproline. [O-]C(=O)C1CCC(=O)N1 chebi_ontology