Lumichrome is a natural metabolite of riboflavin. Lumichrome produced by Rhizobium and other bacterial species induces major developmental changes in plants at nanomolar concentrations.

1H-Indole-3-Carboxylic Acid,6-Bromo-,Methyl Ester is a marine derived natural products found in Smenospongia sp.

Somatostatin-28 (1-12) is a somatostatin fragment which is monitored in brain tissue to track processing of somatostatin.