Supplier Page from Thermo Fisher Scientific for Copper, plasma standard solution, Specpure:r, Cu 1000µg/mL
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific