Supplier Page from Thermo Fisher Scientific for Niobium foil, 0.25mm (0.01in) thick, 99.97% (metals basis excluding Ta), Ta :<0.06%
2-Ethylaniline, 98% from Thermo Fisher Scientific
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific