4-(4'-Methoxyphenyl)-2-pyrrolidinone (CAS NO.103859-86-5), its Synonyms are 2-Pyrrolidinone,4-(4-methoxyphenyl)- ; 2-Pyrrolidinone,4-(p-methoxyphenyl)- (6CI) ; 4-(4-Methoxyphenyl)pyrrolidin-2-one .