Supplier Page from Thermo Fisher Scientific for 2-Ethyl-3,5(6)-dimethylpyrazine, 99%, mixture of isomers
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
4'-Fluoroacetophenone, 99% from Thermo Fisher Scientific
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, tetrasodium salt hydrate, 98%, pure from Thermo Fisher Scientific