Fluorescent Brightener 71

16090-02-1

UV absorption~370

O=S(C1=C(/C=C/C2=C(S(=O)([O-])=O)C=C(NC3=NC(N4CCOCC4)=NC(NC5=CC=CC=C5)=N3)C=C2)C=CC(NC6=NC(N7CCOCC7)=NC(NC8=CC=CC=C8)=N6)=C1)([O-])=O.[Na+].[Na+]