Supplier Page from Thermo Fisher Scientific for 1-Octanesulfonic acid, sodium salt, HPLC grade
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific