Supplier Page from Thermo Fisher Scientific for Dowex® 50WX4, 200-400 mesh, ion-exchange resin
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific