Supplier Page from Thermo Fisher Scientific for 5(6)-Carboxyfluorescein, mixture of isomers, 97%
1-Heptanol, 98% from Thermo Fisher Scientific
2-Mercapto-1-methylimidazole, 98% from Thermo Fisher Scientific
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
Isonipecotic acid, 99% from Thermo Fisher Scientific