英文别名2-Pyrrolidinone, 4-(2-methylpropyl)-, (4R)-; Pregabalin Impurity 92; Oseltamivir Impurity 213; (R)-Pregabalin EP Impurity A ((R)-Pregabalin USP Related Compound C, (R)-Pregabalin Lactam Impurity); (4R)-4-(2-methylpropyl)pyrrolidin-2-one; 4-isobutylpyrrolidin-2-one 
