3,7-Bis(dimethylamino)-5-phenylphenazinium chloride 3562-38-7 AI3-50458 Amethyst Violet C.I. 50225 Heliotrope 2B Heliotrope B (VAN) NSC 5009 Phenazinium, 3,7-bis(diethylamino)-5-phenyl-, chloride