Supplier Page from Thermo Fisher Scientific for Copper foil, 0.5mm (0.02in) thick, Puratronic:r, 99.9985% (metals basis)
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific