Synonyms
pigment red 23;3-Hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide;C.I. 12355;NAPTHOL RED BLUE SHADE;Irgalite Red;2-Naphthalenecarboxamide, 3-hydroxy-4-(2-methoxy-5-nitrophenyl)azo-N-(3-nitrophenyl)-;2-Naphthalenecarboxa
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![5-[[2,4-Diamino-5-[(8-hydroxy-6-sodiosulfo-2-naphthalenyl)azo]phenyl]azo]-4-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt](https://resource.alfa-chemistry.com/structure/6471-44-9.gif)
