Supplier Page from Thermo Fisher Scientific for Magnesium sulfate heptahydrate, 98+%, ACS reagent
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific
Ethyl vinyl ether, 99%, stabilized from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific