Supplier Page from Thermo Fisher Scientific for O-[(Ethoxycarbonyl)cyanomethylenamino]-N,N,N',N'-tetramethyluronium tetrafluoroborate, 97%
2(2-Ethoxyethoxy)ethanol, 98+% from Thermo Fisher Scientific
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific