Supplier Page from Thermo Fisher Scientific for Tungsten foil, 0.5mm (0.02in) thick, 99.95% (metals basis)
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethylcyclohexane, 99+% from Thermo Fisher Scientific