Supplier Page from Thermo Fisher Scientific for 1-Propylphosphonic acid cyclic anhydride, 50+% soln. in DMF
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific