Supplier Page from Thermo Fisher Scientific for 2,5-Dihydroxyterephthaldeyde, 97%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Fumaric acid, 99+% from Thermo Fisher Scientific