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CAS Number :
3844-45-9
Synonym :
Acid blue 9, Hi-Cert™
Molecular Formula :
C₃₇H₃₄Na₂N₂O₉S₃
Acid blue 9,is a synthetic organic compound used primarily as a blue colorant for processed foods, medications, dietary supplements, and cosmetics. It is classified as a triarylmethane dye and is known under various names, such as FD&C Blue No. 1 .