Supplier Page from Thermo Fisher Scientific for Sulfur trioxide pyridine complex, technical, 48-50% active SO3
8-Hydroxyquinoline, ACS reagent from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific
Suberic acid, 99% from Thermo Fisher Scientific