Supplier Page from Thermo Fisher Scientific for Tetrabutylammonium hydrogen sulfate, 99%, extra pure
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific