Supplier Page from Thermo Fisher Scientific for µa-Naphtholphthalein
8-Hydroxyquinoline, ACS reagent from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific