Supplier Page from Thermo Fisher Scientific for 4-(2-Pyridylazo)resorcinol monosodium salt monohydrate
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, methanesulfonic acid salt, 98% from Thermo Fisher Scientific
Ethyl dichlorophosphate, 97% from Thermo Fisher Scientific