Supplier Page from Thermo Fisher Scientific for Tantalum wire, 0.05mm (0.002in) dia, annealed, 99.9% (metals basis)
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific