Supplier Page from Thermo Fisher Scientific for Tetrabutylphosphonium hydroxide, 40 wt.% solution in water
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific