79513-62-5 8-Benzyloxy-1-methyl-1,2,3,4,5-tetrahydropyrimido(1,2-a)benzimidazole methanesulfonate Pyrimido(1,2-a)benzimidazole, 1,2,3,4-tetrahydro-8-benzyloxy-1-methyl-, methanesulfonate