Ethotoin (Peganone), an orally active anticonvulsant agent utilized in epilepsy research, is a hydantoin derivative analogous to phenytoin .

Decursinol is isolated from the roots of Angelica Gigas with an antinociceptive effect. It also has anti-tumor and anti-metastasis activity.

2-Methyl-1-Pyrroline (2-MPN) is an intermediate of a photochemical dye that induces the formation of (R)-2-MP.