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89276-56-2 2,7-naphthalenedisulfonic acid,6-amino-4-hydroxy-3-(1-naphthalenylazo)-, dipotassium salt

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Product Name 2,7-Naphthalenedisulfonic acid,6-amino-4-hydroxy-3-(1-naphthalenylazo)-, dipotassium salt
CAS No. 89276-56-2
Molecular Formula C20H15N3O7S2・2K