organic cation 3,7-bis(dimethylamino)phenothiazin-5-ium DrugBank:DB08167 Drug_Central:1763 methylene blue cation CN(C)c1ccc2nc3ccc(cc3[s+]c2c1)N(C)C PDBeChem:MBT +1 chebi_ontology Beilstein:3594217 InChI=1S/C16H18N3S/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13/h5-10H,1-4H3/q+1 CHEBI:43830 3,7-bis(dimethylamino)phenothiazin-5-ium An organic cation that is phenothiazin-5-ium substituted by dimethylamino groups at positions 3 and 7. The chloride salt is the histological dye 'methylene blue'. 284.40034 Reaxys:3594217 C16H18N3S LINCS:LSM-4555 284.12160 RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazine