Supplier Page from Thermo Fisher Scientific for 3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 97%
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific