SMILES: C1=CC=C(C=C1)[N+]2=C3C=C(C=CC3=NC4=C2C=C(C=C4)N)N
Description: The molecule is an organic cation that is 5-phenylphenothiazin-5-ium substituted by amino groups at positions 3 and 7 as well as a nitro group at position 4. The chloride salt is the histological dye 'safranin O'. It has a role as a histological dye and a fluorochrome. It is an organic cation and a member of phenazines.