2636-55-7 3-Amino-7-methylaminophenothiazin-5-ium chloride 3-Imino-7-(methylamino)-3H-phenothiazine hydrochloride 531-57-7 Azure C Azure C (VAN) EINECS 208-512-8 Methylene Azure C Monomethyldiaminodiphenazothionium chloride Monomethylthionine Monomethylthionine chloride NSC 16165 Phenothiazin-5-ium, 3-amino-7-methylamino-, chloride