Supplier Page from Thermo Fisher Scientific for Methyl 4,5-dibromo-3-hydroxythiophene-2-carboxylate, 97%
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl L(-)-lactate, 97% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific