2,2'-Hexamethylenebis(1,9-dimethyl-9H-pyrido(3,4-b)indolium bromide) 63885-39-2 9H-Pyrido(3,4-b)indolium, 2,2'-(1,6-hexanediyl)bis(1,9-dimethyl-, dibromide 9H-Pyrido(3,4-b)indolium, 2,2'-hexamethylenebis(1,9-dimethyl-, dibromide