Synonyms: Benzimidazole, 4,5,6,7-tetrahydro-1-ethyl-5-(1-pyrrolidinyl)-, fumarate (2:5);4,5,6,7-Tetrahydro-1-ethyl-5-(1-pyrrolidinyl)benzimidazole fumarate (2:5);1H-Benzimidazole, 4,5,6,7-tetrahydro-1-ethyl-5-(1-pyrrolidinyl)-, (E)-2-butenedioate (2:5);AC1O66Q1;LS-33179;(E)-but-2-enedioic acid; 1-ethyl-5-pyrrolidin-1-yl-4,5,6,7-tetrahydrobenzimidazole;99700-13-7