Other Name: Pergasol Yellow 6G (CAB); Duasyn Direct Yellow 6G (CAS); Cartasol Yellow 6GF (CLAR) 
Chemical Structure: 

Molecular Formula:C₂₆H₂₂N₄Na₂O₉S₃
Molecular Weight :676.65
CAS:72705-26-1 
Properties: yellow powder, soluble in water 
Use: In the dyeing of cellulose textiles; also used in the coloring of paper . 
Method of preparation: diazotization of methylbenzothiazoledisulfonic acid; Dehydrothio-p-toluidinesulfonic acid, and coupling of 2-Methoxy-4-sulfo-5-acetotoluidide 
The foreign manufacturers of the same products.