1H-Imidazole-4-acetonitrile, 5-methyl-2-phenyl-, (E)-2-butanedioate (1:1) 5-Methyl-2-phenylimidazole-4-acetonitrile fumarate (1:1) 83153-38-2 McN 2378-46 McN 237846 Mefenidil fumarate Mefenidil fumarate [USAN]