1H-BENZIMIDAZOL-5-AMINE, 4,5,6,7-TETRAHYDRO-N-BUTYL-1-ETHYL-, (E)-2-BUTENEDIOATE 1H-Benzimidazol-5-amine, 4,5,6,7-tetrahydro-N-butyl-1-ethyl-, (E)-2-butenedioate (2:3) 4,5,6,7-Tetrahydro-5-(butylamino)-1-ethylbenzimidazole fumarate (2:3) 96224-07-6 Benzimidazole, 4,5,6,7-tetrahydro-5-(butylamino)-1-ethyl-, fumarate (2:3)