Supplier Page from Thermo Fisher Scientific for Fluoroboric acid, 50 wt% solution in water
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, 99%, pure from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific