Supplier Page from Thermo Fisher Scientific for Pyridine hydrobromide perbromide, tech. 90%
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
L(+)-Arabinose, 99+% from Thermo Fisher Scientific
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific