Supplier Page from Thermo Fisher Scientific for 1-Bromo-2,4-dimethoxybenzene, 98%
Ethyl 4-bromocrotonate, 75%, tech from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific