Direct red 31 [CAS 5001-72-9]

Direct red 31 is a good dyeing agent for cotton fabrics.

[5001-72-9]

C32H21N5Na2O8S2

713.65

O=S(C1=C(/N=N/C2=CC=CC=C2)C(O)=C3C=CC(NC4=CC5=CC(S(=O)(O[Na])=O)=C(/N=N/C6=CC=CC=C6)C(O)=C5C=C4)=CC3=C1)(O[Na])=O

Fluorescent Dye

10 mM in DMSO

Room temperature