Caproic acid is a colorless oily liquid that smells like cheese. It is a fatty acid found naturally in various animal fats and oils. Hexanoic acid is a resistance priming inducer that protects tomato plants from Botrytis cinerea.

Pygmaniline B (1,3-bis(2,4-dimethoxyphenyl)urea) is a marine derived natural products found in Lichina pygmaea.

Trans-Petroselinic acid, the trans isomer of petroselinic acid and an isomer of oleic acid, is detected in the milk fat of cows, goats, and ewes, as well as human breast milk.