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89310-64-5 1-naphthalenesulfonic acid, 5-hydroxy-6-[(7-sulfo-2-naphthalenyl)azo]-,dipotassium salt

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Product Name 1-Naphthalenesulfonic acid, 5-hydroxy-6-[(7-sulfo-2-naphthalenyl)azo]-,dipotassium salt
CAS No. 89310-64-5
Molecular Formula C20H14N2O7S2・2K