Supplier Page from Thermo Fisher Scientific for Benzenesulfonic acid, tech. ca 75% w/w aq. soln
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
4-Fluoroaniline, 98% from Thermo Fisher Scientific
Ethyl acrylate, 99.5%, stabilized from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific