Supplier Page from Thermo Fisher Scientific for Hydroquinonesulfonic acid potassium salt, 98+%
Esculin hydrate, 97% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific