Supplier Page from Thermo Fisher Scientific for (3-Bromopropoxy)-tert-butyldimethylsilane, 97%, stabilized over sodium carbonate
2(2-Ethoxyethoxy)ethanol, 98+% from Thermo Fisher Scientific
Epichlorohydrin, 99% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific