Supplier Page from Thermo Fisher Scientific for Yttrium rod, 12.7mm (0.5in) dia, 99.9% (metals basis excluding Ta)
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific