Supplier Page from Thermo Fisher Scientific for Phosphoric acid, ACS reagent, 85+% solution in water
1,2-Ethanedithiol, 95% from Thermo Fisher Scientific
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Eicosanoic acid, 98% from Thermo Fisher Scientific
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific