Supplier Page from Thermo Fisher Scientific for Perchloric acid, ACS reagent, ca. 70% solution in water
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
4'-Fluoroacetophenone, 99% from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific