Supplier Page from Thermo Fisher Scientific for (R)-3-Isopropyl-2,5-dimethoxy-3,6-dihydropyrazine, 98%
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific