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6226-82-0 2,7-naphthalenedisulfonic acid,3-hydroxy-4-[[4-(phenylazo)-1-naphthalenyl]azo]-, disodium

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Product Name 2,7-Naphthalenedisulfonic acid,3-hydroxy-4-[[4-(phenylazo)-1-naphthalenyl]azo]-, disodium salt
CAS No. 6226-82-0
Molecular Formula C26H18N4O7S2・2Na