Supplier Page from Thermo Fisher Scientific for Potassium chloride, ultra dry, 99.998% (metals basis)
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific