Supplier Page from Thermo Fisher Scientific for (3-Bromopropoxy)-tert-butyldimethylsilane, 97%, stabilized over sodium carbonate
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific