1-(2-Furylmethyl)-5-oxopyrrolidine-3-carboxylic acid (CAS NO.175136-93-3), its Synonyms are 1-(2-Furylmethyl)-5-oxo-3-pyrrolidinecarboxylic acid ; 3-Pyrrolidinecarboxylic acid, 1-(2-furanylmethyl)-5-oxo- ; 1-(Fur-2-ylmethyl)-5-oxopyrrolidine-3-carboxylic acid ; 1-(Fur-2-ylmethyl)-5-oxopyrrolidine-3-carboxylic acid 97% .