Supplier Page from Thermo Fisher Scientific for Copper(I) bromide, Puratronic:r, 99.998% (metals basis)
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl acrylate, 99.5%, stabilized from Thermo Fisher Scientific