Supplier Page from Thermo Fisher Scientific for Tetrabutylammonium hydroxide, 40 wt.% (1.5M) solution in water
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, methanesulfonic acid salt, 98% from Thermo Fisher Scientific