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Benzenesulfonic acid, 4-(4-(2-(3-chloro-2-hydroxy-5-nitrophenyl)diazenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, sodium salt (1:1) CAS 10132-99-7 PubChem CID 112003
CC1=NN(c2ccc(S(=O)(=O)[O-])cc2)C(=O)C1N=Nc1cc([N+](=O)[O-])cc(Cl)c1O.[Na+] -
4-[4-(3-Chloro-2-hydroxy-5-nitrophenylazo)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid sodium salt CAS 10132-99-7 PubChem CID 136778454
CC1=NN(c2ccc(S(=O)(=O)[O-])cc2)C(=O)C1N=Nc1cc([N+](=O)[O-])cc(Cl)c1O.[Na+] -
4-4-(3-chloro-2-hydroxy-5-nitrophenyl)azo-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-ylbenzenesulphonate (sodium salt) CAS 10132-99-7 PubChem CID 137205842
CC1=NN(c2ccc(S(=O)(=O)O)cc2)C(=O)C1N=Nc1cc([N+](=O)[O-])cc(Cl)c1O.[Na]