Supplier Page from Thermo Fisher Scientific for Tetrabutylammonium phosphate monobasic, 0.4M solution in acetonitrile, AcroSeal®
1,2-Ethanedithiol, 95% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific