Also Called: 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4- diaminophenyl)azo]phenyl]amino]carbonyl]phenyl]azo ]-5-hydroxy-6-(phenylazo)-, disodium salt;2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt;2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4-[[[4-[2-(2,4-diaminophenyl)diazenyl]phenyl]amino]carbonyl]phenyl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2);二ナトリウム=4-アミノ-3-{[4-({4-[(2,4-ジアミノフェニル)ジアゼニル]フェニル}カルバモイル)フェニル]ジアゼニル}-5-ヒドロキシ-6-(フェニルジアゼニル)ナフタレン-2,7-ジスルホナート;C. I.直接黑166