| (-)-(2S)-n-(1S)-1-((2S)-2-carbamoyl-1-pyrrolidinyl)carbonyl-3-(methylbut yl)- |
| 6-oxopipecolamide |
| (S)-l-leucyl-n-((6-oxo-2-piperidinyl)carbonyl)-l-prolinamide |
| l-6-ketopiperidine-2-carbonyl-leucyl-l-prolin-amide |
| l-pyro-2-aminoadipyl-l-leucyl-l-prolinamide |
| posatirelin |
| rgh-2202 |
