Acid Yellow 40
[CAS# 6372-96-9]

Identification

• Classification: Dyes and pigments >> Dyes >> Acid dyestuff
• Name: Acid Yellow 40
• Synonyms: Sodium 5-Chloro-2-[3-Methyl-4-[4-(4-Methylphenyl)Sulfonyloxyphenyl]Azo-5-Oxo-4H-Pyrazol-1-Yl]Benzenesulfonate; Sodium 5-Chloro-2-[5-Keto-3-Methyl-4-[4-(4-Methylphenyl)Sulfonyloxyphenyl]Azo-4H-Pyrazol-1-Yl]Benzenesulfonate; C.I. Acid Yellow 40 (Van)
• Molecular Formula: C₂₃H₁₈ClN₄NaO₇S₂
• Molecular Weight: 584.98
• CAS Registry Number: 6372-96-9
• EINECS: 228-907-9
• SMILES: C1=CC(=CC(=C1N4N=C(C(N=NC3=CC=C(O[S](=O)(=O)C2=CC=C(C=C2)C)C=C3)C4=O)C)[S]([O-])(=O)=O)Cl.[Na+]
• InChI: 1S/C23H19ClN4O7S2.Na/c1-14-3-10-19(11-4-14)37(33,34)35-18-8-6-17(7-9-18)25-26-22-15(2)27-28(23(22)29)20-12-5-16(24)13-21(20)36(30,31)32;/h3-13,22H,1-2H3,(H,30,31,32);/q;+1/p-1
• InChIKey: DXKDBQWDRGRKGC-UHFFFAOYSA-M