Supplier Page from Thermo Fisher Scientific for (-)-Cinchonidine, 99% (total base), may cont. up to 5% quinine
1-Fluoro-4-nitrobenzene, 99% from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific