Supplier Page from Thermo Fisher Scientific for 3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 97%
1-Ethynyl-1-cyclohexanol, 99+% from Thermo Fisher Scientific
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific