Supplier Page from Thermo Fisher Scientific for Zinc sulfate heptahydrate, 99.5%, for analysis
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Eicosanoic acid, 98% from Thermo Fisher Scientific
Ethyl benzoate, 99+% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific