Supplier Page from Thermo Fisher Scientific for Niobium powder, -325 mesh, Puratronic:r, 99.99% (metals basis excluding Ta), Ta :<500ppm
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Dulcitol, 99+% from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific