3,7-Bis(diethylamino)-1-ethoxyphenazoxonium methanesulfonate 71850-58-3 Phenazoxonium, 3,7-bis(diethylamino)-1-ethoxy-, methanesulfonate Phenoxazin-5-ium, 3,7-bis(diethylamino)-1-ethoxy-, methanesulfonate