Direct Fast Yellow R;Direct Yellow 50;Sirius Light Yellow R;25738-24-3;Direct Lightfast Yellow K;Sirius Light Yellow R Extra;C.I. DIRECT YELLOW 50;NSC47763;C.I. Direct Yellow 50, tetrasodium salt;Helion Yellow RL;Orbantin Yellow R;Pergasol Yellow 2R;Direct Fast Yellow LR;Levacell Fast Yellow R;AC1L2CCU;3214-47-9;Pyrazol Fast Yellow RSW;EINECS 247-220-5;nyl)diazenyl)-1,5-naphthalenedisulfonic acid;1,5-Naphthalenedisulfonic acid, 3,3'-(carbonylbis(imino(2-methyl-4,1-phenylene)azo))bis-;1,5-Naphthalenedisulfonic acid, 3,3'-[carbonylbis[imino(2- methyl-4,1-phenylene)azo]]bis-;3,3'-(Carbonylbis(imino(2-methyl-4,1-phenylene)azo))bisnaphthalene-1,5-disulphonic acid;1,5-Naphthalenedisulfonic acid, 3, {3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis-,} tetrasodium salt; 3-((4-(((4-((4,8-Disulfo-2-naphthyl)diazenyl)-3-methylanilino)carbonyl)amino)-2-methylphe;1,5-Naphthalenedisulfonic acid, 3,3'-(carbonylbis(imino(2-methyl-4,1-phenylene)-2,1-diazenediyl))bis-;3-[(E)-{4-[({4-[(E)-(4,8-disulfonaphthalen-2-yl)diazenyl]-3-methylphenyl}carbamoyl)amino]-2-methylphenyl}diazenyl]naphthalene-1,5-disulfonic acid;3-[[4-[[4-[(4,8-disulfonaphthalen-2-yl)diazenyl]-3-methylphenyl]carbamoylamino]-2-methylphenyl]diazenyl]naphthalene-1,5-disulfonic acid;93964-46-6