Supplier Page from Thermo Fisher Scientific for Zinc sulfate heptahydrate, 99.5%, for analysis
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Eugenol, 99% from Thermo Fisher Scientific