Product Description: Fluorescent brightener 220 is an optical brightener dye.
Formula: C40H40N12Na4O16S4
References: [1]Vérité PM , et al.First-principles investigation of the double ESIPT process in a thiophene-based dye. Phys Chem Chem Phys. 2019 Jan 30;21(5):2307-2317.