(+-)-5-Ethyl-5-phenyl-2-pyrrolidinone (+-)-5-Ethyl-5-phenylpyrrolid-2-one 2-Pyrrolidinone, 5-ethyl-5-phenyl-, (+-)- 5-21-08-00152 (Beilstein Handbook Reference) 5556-57-0 BRN 1451635