Reactive Red 177;disodium hydrogen 5-acetamido-4-hydroxy-3-[(m-phosphonatophenyl)azo]naphthalene-2,7-disulphonate;2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy- 3-[(3-phosphonophenyl)azo]-, disodium salt
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