3,8-Di(trimethylammoniummethyl)-1H,6H-pyrrolo(2,3-e)indole dimethylsulfate 72990-72-8 BENZO(1,2-b:3,4-b')DIPYRROLE-3,8-DIMETHANAMINIUM, 1,6-DIHYDRO-2,7-BIS(ETHOXYCARB Benzo(1,2-b:3,4-b')dipyrrole-3,8-dimethanaminium, 1,6-dihydro-2,7-bis(ethoxycarbonyl)-N,N,N,N',N',N'-hexamethyl-, bis(methylsulfate)