Supplier Page from Thermo Fisher Scientific for Niobium foil, 1.0mm (0.04in) thick, annealed, 99.8% (metals basis)
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl bromopyruvate, 80-85% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific