Supplier Page from Thermo Fisher Scientific for 2,5-Dimethoxytetrahydrofuran, cis + trans, 98%
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific
Glutaric anhydride, 95% from Thermo Fisher Scientific