1H-Benzimidazolium, 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-1,3-dimethyl-, methyl sulfate 2-(7-(Diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-1,3-dimethyl-1H-benzimidazolium methyl sulphate 35869-60-4 EINECS 252-770-4