Supplier Page from Thermo Fisher Scientific for 15-Crown-5, 98%
1-Fluoro-4-nitrobenzene, 99% from Thermo Fisher Scientific
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Ethyl acrylate, 99.5%, stabilized from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific