Supplier Page from Thermo Fisher Scientific for Methyl 4-cyano-5-(methylthio)thiophene-2-carboxylate, 97%
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific