Supplier Page from Thermo Fisher Scientific for Sodium carbonate, anhydrous, Puratronic:r, 99.997% (metals basis)
2-Ethylaniline, 98% from Thermo Fisher Scientific
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific