1-(2-n-propoxyethyl)-2-(4-methyl-1-piperazinyl)methylbenzimidazole 、
富马酸 在
乙醇乙酸乙酯 作用下,
以to give 1-(2-n-propoxyethyl)-2-(4-methyl-1-piperaziny)methylbenzimidazole difumarate (3.49 g) as colorless crystals, m.p. 160.5°-161.5° C.的产率得到1H-Benzimidazole, 2-((4-methyl-1-piperazinyl)methyl)-1-(2-propoxyethyl)-, (E)-2-butenedioate (1:2)