Supplier Page from Thermo Fisher Scientific for 2,3-Pyrazinedicarboxylic anhydride, 97%
2-Ethylaniline, 98% from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific