Supplier Page from Thermo Fisher Scientific for Sulfur trioxide-pyridine complex, 98%, active SO3 ca 48-50%
(±)-erythro-Aleuritic acid, 95% from Thermo Fisher Scientific
8-Hydroxyquinoline, ACS reagent from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific
Norcamphor, 99% from Thermo Fisher Scientific