Supplier Page from Thermo Fisher Scientific for Acetylenedicarboxylic acid, 98%
8-Hydroxyquinoline, ACS reagent from Thermo Fisher Scientific
D-Mannitol, 98+% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific