CAS NO:6375-55-9

EC NO:228-940-9

Molecular Formula:C₃₂H₂₄N₈Na₂O₈S₂

Molecular Weight:758.6913

Synonyms:C.I. 22910;C.I. Acid Yellow 42;C.I. Acid Yellow 42 disodium salt;C.I. Acid Yellow 42, disodium salt;disodium 4,4-bis(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-ylazo)-1,1-biphenyl-2,6-disulphonate;Acid Yellow 42;disodium 4,4'-bis[(E)-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazenyl]biphenyl-2,2'-disulfonate;disodium 5-(5-hydroxy-3-methyl-1-phenyl-pyrazol-4-yl)azo-2-[4-(5-hydroxy-3-methyl-1-phenyl-pyrazol-4-yl)azo-2-sulfonato-phenyl]benzenesulfonate;Acid Yellow 42;

Molecular Structure:

CAS NO:6359-85-9

EC NO:228-810-1

Molecular Formula:C₂₃H₂₀N₅NaO₆S₂

Molecular Weight:549.5546

Synonyms:C.I. 18835;C.I. Acid Yellow 25;C.I. Acid Yellow 25 (VAN);C.I. Acid Yellow 25, monosodium salt (8CI);Acid Yellow 25;Acid Yellow 25 (18835);sodium 4-(3-methyl-4-{(E)-[4-methyl-3-(phenylsulfamoyl)phenyl]diazenyl}-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonate;sodium 4-[5-hydroxy-3-methyl-4-[4-methyl-3-(phenylsulfamoyl)phenyl]azo-pyrazol-1-yl]benzenesulfonate;Acid Yellow 25 (C.I. 18835);

Molecular Structure: