Supplier Page from Thermo Fisher Scientific for N-Fmoc-D-proline, 98+%, may cont. up to ca 5% water
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Iron(III) acetylacetonate, 99+% from Thermo Fisher Scientific