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89310-61-2 1-naphthalenesulfonic acid, 4-hydroxy-3-[(5-sulfo-2-naphthalenyl)azo]-,diammonium salt

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Product Name 1-Naphthalenesulfonic acid, 4-hydroxy-3-[(5-sulfo-2-naphthalenyl)azo]-,diammonium salt
CAS No. 89310-61-2
Molecular Formula C20H14N2O7S2・2H3N