Supplier Page from Thermo Fisher Scientific for 1-Bromo-4-chlorobenzene, 98+%
Ethyl 4-bromocrotonate, 75%, tech from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific