英文别名Piracetam Impurity D; Piracetam EP Impurity D; 2-(2-oxopyrrolidin-1-yl)acetate; 2-Pyrrolidinon-1-ylacetic acid; 2-(2-ketopyrrolidin-1-yl)acetic acid; 2-pyrrolidinone-N-acetic acid; 2-oxo-1-pyrrolidineacetic acid; 2-Oxo-1-pyrrolidinessigsaeure; (2-Oxo-1-pyrrolidinyl)acetic acid 
