Synonyms: Spiro[4H-1-benzopyran-4,4'-imidazolidine]-2',5'-dione, 6-fluoro-2,3-dihydro-, (4S)-;(4S)-6'-Fluoro-2',3'-dihydrospiro[imidazolidine-4,4'-[4H][1]benzopyran]-2,5-dione;(4S)-6-Fluorospiro[2H-1-benzopyran-4(3H),4'-imidazolidine]-2',5'-dione;(S)-6-Fluoro-2,3-dihydrospiro[4H-1-benzopyran-4,4'-imidazolidine]-2',5'-dione;CP-45634