72812-37-4

Chromate(2-),[4-[4,5-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(3-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]-,dihydrogen