5-oxopyrrolidine-2-carboxylic acid 5-OXO-2-PYRROLIDINECARBOXYLIC ACID Pyroglutamic acid 4042-36-8 149-87-1 98-79-3 AIDS-011910 5-Oxo-DL-proline DL-Proline, 5-oxo- (9CI) EINECS 205-748-3 NSC 40887 CHEBI:16010 292915_ALDRICH DL-5-Oxo-2-pyrrolidinecarboxylic acid 5-oxo-D-proline CPD-656 D-5-Pyrrolidone-2-carboxylic acid D-Pyroglutamic acid AIDS011910 NSC143034 STK290904 DL-Proline, 5-oxo- DL-Pyroglutamic acid NSC40887 5-oxo-L-proline CPD-589 L-5-Pyrrolidone-2-carboxylic acid L-Pyroglutamic acid AG-205/32710031