3H-Phenothiazin-7-amine, 3-imino-, monohydrochloride 3H-Phenothiazine, 7-amino-3-imino-, monohydrochloride 581-64-6 C.I. 52000 Cyanine Katalysin Lauth's violet NSC56342 Phenothiazin-5-ium, 3,7-diamino-, chloride Thionin Thionine