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74291-89-7 2-naphthalenesulfonic acid, 6-amino-3-[(2-ethylphenyl)azo]-4-hydroxy-,monosodium salt

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Product Name 2-Naphthalenesulfonic acid, 6-amino-3-[(2-ethylphenyl)azo]-4-hydroxy-,monosodium salt
CAS No. 74291-89-7
Molecular Formula C18H17N3O4S・Na