Supplier Page from Thermo Fisher Scientific for Hydrobromic acid, pure, ca. 48 wt% solution in water
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethylmercurithiosalicylic acid, sodium salt, 97.0-101.0% from Thermo Fisher Scientific