Supplier Page from Thermo Fisher Scientific for Niobium foil, 0.127mm (0.005in) thick, annealed, 99.8% (metals basis)
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific