Supplier Page from Thermo Fisher Scientific for Perchloric acid, ACS reagent, ca. 70% solution in water
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific