Supplier Page from Thermo Fisher Scientific for 12-Crown-4, 98%
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific