Supplier Page from Thermo Fisher Scientific for Copper foil, 1.0mm (0.04in) thick, Puratronic:r, 99.999% (metals basis)
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific