Cyclo(Pro-Ala) is a natural product.

Goodyeroside A is a glycoside compound derived from the plant Goodyera that exhibits significant hepatoprotective activity. It can inhibit liver damage induced by carbon tetrachloride in primary cultured rat hepatocytes.

N-phenylacetyl-L-Homoserine lactone attenuates the group sensing of the pathogen Acinetobacter baumannii and can be used to study bacterial infections.