Supplier Page from Thermo Fisher Scientific for Ytterbium(III) oxide, REacton:r, 99.998% (REO)
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific