英文别名2-(oxo-pyrrolidin-1-yl)-acetic acid ethyl ester; ETHYL 2-OXOPYRROLIDIN-2-YLACETATE; 2-Pyrrolidone-N-acetic acid ethyl ester; Einecs 262-828-0; 1-Pyrrolidineacetic acid, 2-oxo-, ethyl ester; 1-(Ethoxycarbonylmethyl)-2-pyrrolidone; Piracetam Impuirty C 
