Supplier Page from Thermo Fisher Scientific for Magnesium sulfate, dried, contains ca 1-2 mol water of hydration
4-Ethylaniline, 99+% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific