Supplier Page from Thermo Fisher Scientific for Copper(II) gluconate
2-Mercaptobenzothiazole, 95% from Thermo Fisher Scientific
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
Acetylenedicarboxylic acid, 98% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific