Supplier Page from Thermo Fisher Scientific for 1-Octanesulfonic acid, sodium salt, HPLC grade
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Ethylcyclohexane, 99+% from Thermo Fisher Scientific
Eugenol, 99% from Thermo Fisher Scientific