Synonyms: Manganate(1-),[4-[(2,5-dichloro-4-sulfophenyl)azo-kN1]-4,5-dihydro-5-(oxo-kO)-1-phenyl-1H-pyrazole-3-carboxylato(3-)]-, hydrogen(9CI); Manganate(1-),[4-[(2,5-dichloro-4-sulfophenyl)azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylato(3-)]-,hydrogen; 1H-Pyrazole-3-carboxylic acid,4-[(2,5-dichloro-4-sulfophenyl)azo]-4,5-dihydro-5-oxo-1-phenyl-, manganesecomplex