Supplier Page from Thermo Fisher Scientific for Urea hydrogen peroxide, 1 g tablets, stabilized, contains 35 wt% H2O2
2,6-Lutidine, 99% from Thermo Fisher Scientific
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific