Supplier Page from Thermo Fisher Scientific for 2,5-Difluoro-4-nitrobenzoic acid, 97%
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific