Supplier Page from Thermo Fisher Scientific for 1,2-Naphthoquinone-4-sulfonic acid sodium salt, 98%
1-Fluoro-4-nitrobenzene, 99% from Thermo Fisher Scientific
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific