Supplier Page from Thermo Fisher Scientific for Zirconium(IV) sulfate tetrahydrate, 99.99% (metals basis)
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific