Supplier Page from Thermo Fisher Scientific for 2,3,4,5-Tetramethyl-2-cyclopentenone, cis + trans, 95%
2-Ethyl-1,3-hexanediol, 99%, mixture of isomers from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific