Supplier Page from Thermo Fisher Scientific for Magnesium sulfate, dried, contains ca 1-2 mol water of hydration
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific