(+)-6-Fluoro-2,3-dihydrospiro(4H-1-benzopyran-4,4'-imidazolidine)-2',5'-dione monosodium salt 113387-56-7 Sorbinil sodium salt Spiro(4H-1-benzopyran-4,4'-imidazolidine)-2',5'-dione, 6-fluoro-2,3-dihydro-, monosodium salt, (+)-