Supplier Page from Thermo Fisher Scientific for 1,4-Diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct, 97%
2-Mercapto-1-methylimidazole, 98% from Thermo Fisher Scientific
2-Mesitylenesulfonyl chloride, 99% from Thermo Fisher Scientific
D-Mannitol, 98+% from Thermo Fisher Scientific
Sulfanilamide, 98% from Thermo Fisher Scientific