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5858-53-7

1-Naphthalenesulfonic acid, 5-hydroxy-6-(1-naphthalenylazo)-, monosodium salt

ALSO CALLED 227-493-7, Acid Red 20, C.I. Acid Red 20 (VAN), Double Ponceau 2R, Double Ponceau 3R, Double Ponceau...

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