Supplier Page from Thermo Fisher Scientific for 2,5-Dihydroxyterephthaldeyde, 97%
2-Ethylaniline, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Fumaric acid, 99+% from Thermo Fisher Scientific