Direct Red 254
Name:C.I.Direct Red 254 Molecular Structure: Double azo class Molecular Formula: Molecular Weight: CAS Registry Number:101380-00-1
Direct Red 81
Name:C.I.Direct Red 81,C.I.28160 Molecular Structure: Double azo class Molecular Formula:C29H19N5Na2O8S2 Molecular Weight: 675.6 CAS Registry Number:2610-11-9/12237-71-7