Synonyms: | 4,5-dihydro-5-oxo-4-[(3-phosphonophenyl)azo]-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, ammonium sodium salt;4,5-Dihydro-5-oxo-4-((3-phosphonophenyl)azo)-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, ammonium sodium salt;Einecs 285-315-3 |