SUDAN IV-D6;1-[2-METHYL-4-(2-METHYL-PHENYLAZO)-PHENYLAZO]-2-NAPHTHOL-D6;1-[2-Methyl-4-(2-methyl-phenylazo)-phenylazo]-2-naphthol-d6 solution;Sudan IV-d6 solution;Sudan 4 D6 (naphthyl D6);1-[2-[2-Methyl-4-[2-(2-Methylphenyl)diazenyl]phenyl]diazenyl]-2-naphthalenol-d6;1-[4-(o-Tolylazo)-o-tolylazo]-2-naphthol-d6
