Benzenesulfonic acid, 4,4-[methylenebis[4,1-phenyleneazo( 4,5-dihydro-3-methyl-5-oxo-1H-pyrazole -4,1-diyl)]]bis[3-methyl-, disodium salt
CAS No. 75949-73-4
Benzenesulfonicacid,4,4'-[methylenebis[4,1-phenyleneazo(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]]bis[3-methyl-,disodium salt (9CI)