Synonyms: Phenothiazin-5-ium,3,7-bis(dimethylamino)-1,9-dimethyl-, chloride (8CI,9CI); [7-(Dimethylamino)-1,9-dimethyl-3H-phenothiazin-3-ylidene]dimethylammoniumchloride (7CI); 1,9-Dimethylmethylene blue;3,7-Bis(dimethylamino)-1,9-dimethylphenothiazinium chloride; Dimethylmethyleneblue; Taylor's blue