Supplier Page from Thermo Fisher Scientific for 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, ACS, 90+%
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific