Acetyltrialanine is a dipeptide compound that binds at two sites on the Tb+3-pancreatic elastase complex and can be used as a nitrogen source.

Loperamide oxide (R 58425) is a secreted antidiarrheal agent that increases peristalsis and inhibits intestinal absorption of water and ions and is used in the study of chronic diarrhea in patients with Crohn's disease.

[Arg15,Asp16,25,Pro18,21,23,Val22,Ile24]-Amyloid β-Protein (15-25)