Supplier Page from Thermo Fisher Scientific for Tetrapropylammonium hydroxide, 25% in water
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific