Supplier Page from Thermo Fisher Scientific for Sulfur trioxide pyridine complex, technical, 48-50% active SO3
1,6-Hexanediol, 97% from Thermo Fisher Scientific
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
D-Mannitol, 98+% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific