Supplier Page from Thermo Fisher Scientific for Yttrium rod, 6.35mm (0.25in) dia, 99.9% (metals basis excluding Ta)
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific