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90377-95-0 2,7-naphthalenedisulfonic acid,4-amino-5-hydroxy-3-(1-naphthalenylazo)-, disodium salt

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Product Name 2,7-Naphthalenedisulfonic acid,4-amino-5-hydroxy-3-(1-naphthalenylazo)-, disodium salt
CAS No. 90377-95-0
Molecular Formula C20H15N3O7S2・2Na