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Yellow No.407

Legal color:Yellow No.407 　
General name:Fast Light Yellow 3G 　　
Class:Acid Dye
FDA :(EXT.D & C Yellow No.3) 　
CI #:C.I. 18820
Color #:Acid Yellow 11
CAS #:6359-82-6
CAS :Benzenesulfonic acid,4-[4,5-dihydro-3-methyl-5-oxo-4-(phenylazo)-1H-pyrazol-1-yl]-,sodium salt
IUPAC:→1;Sodium 4-[4,5-dihydro-3-methyl-5-oxo-4-phenylazo-2-pyrazol-1-yl] benzenesulfonate (?)
→2;4-[4,5-Dihydro-3-methyl-5-oxo-4-phenylazo-2-pyrazol-1-yl]benzenesulfonic acid sodium salt (?)
Chemical structure :

Fast Light Yellow 3G