英文别名3-Pyrrolidinecarboxylic acid, 5-oxo; 2-Oxopyrrolidine-4-carboxylic acid; 4-Carboxy-2-pyrrolidinone; DL-2-Pyrrolidone-4-carboxylic acid; 5-ketopyrrolidine-3-carboxylic acid; Pyrrolid-2-on-4-carboxylsaeure; 3-Pyrrolidinecarboxylic acid,5-oxo; DL-Isopyroglutaminsaeure; 4-carboxy-2-oxopyrrolidine; 5-Oxo-3-pyrrolidinecarboxylic acid 
