Supplier Page from Thermo Fisher Scientific for Hafnium tert-butoxide, 99.9% (metals basis excluding Zr), Zr< 0.5%
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific