Supplier Page from Thermo Fisher Scientific for Lawesson's Reagent, 97%
D(-)-Ribose, 99+% from Thermo Fisher Scientific
Ethylene carbonate, 99+% from Thermo Fisher Scientific
Hydroquinone, 99% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific