Supplier Page from Thermo Fisher Scientific for Copper foil, 0.5mm (0.02in) thick, Puratronic:r, 99.998% (metals basis), Oxygen free
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific