Supplier Page from Thermo Fisher Scientific for Niobium foil, 0.127mm (0.005in) thick, annealed, 99.8% (metals basis)
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific