2-(2-oxopyrrolidin-1-yl)butanoicacid; alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid; Levetiracetam impurity A; Levetiracetam Carboxylic Acid; 2-(2-oxopyrrolidin-1-yl)butanoic Acid; racemic alpha-ethyl-2-oxo-1-pyrrolidineacetic acid
2-(2-oxopyrrolidin-1-yl)butanoicacid; alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid; Levetiracetam impurity A; Levetiracetam Carboxylic Acid; 2-(2-oxopyrrolidin-1-yl)butanoic Acid; racemic alpha-ethyl-2-oxo-1-pyrrolidineacetic acid