Synonyms: 2-Imidazolidinone,1,5-dimethyl-4-phenyl-, (4S-cis)-;(4R,5S)-3,4-Dimethyl-5-phenylimidazolidin-2-one; (4S,5R)-(+)-1,5-Dimethyl-4-phenyl-2-imidazolidinone;(4S,5R)-(+)-1,5-Dimethyl-4-phenyl-2-imidazolidinone;(4S,5R)-1,5-Dimethyl-4-phenylimidazolidin-2-one