Supplier Page from Thermo Fisher Scientific for 12-Crown-4, 98%
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
3-Fluorobenzyl bromide, 95% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific