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89156-97-8 benzenesulfonic acid, 3-[(2,4-dihydroxyphenyl)azo]-2-hydroxy-5-nitro-,monosodium salt

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Product Name Benzenesulfonic acid, 3-[(2,4-dihydroxyphenyl)azo]-2-hydroxy-5-nitro-,monosodium salt
CAS No. 89156-97-8
Molecular Formula C12H9N3O8S・Na