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6226-96-6 2,7-naphthalenedisulfonic acid,4,5-dihydroxy-3-[[4-(phenylazo)phenyl]azo]-, disodium salt

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Product Name 2,7-Naphthalenedisulfonic acid,4,5-dihydroxy-3-[[4-(phenylazo)phenyl]azo]-, disodium salt
CAS No. 6226-96-6
Molecular Formula C22H16N4O8S2・2Na