Supplier Page from Thermo Fisher Scientific for cis-2-Butene-1,4-diol, 96%, remainder trans-isomer
2-Ethyl-1-hexanol, 99% from Thermo Fisher Scientific
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific