Supplier Page from Thermo Fisher Scientific for Tantalum foil, 0.025mm (0.001in) thick, 99.997% (metals basis)
Ethyl bromopyruvate, 80-85% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific
Ethyl vinyl ether, 99%, stabilized from Thermo Fisher Scientific