Pyrrolidine is a five-membered ring compound that contains four carbon atoms and one nitrogen atom. It is a colorless, flammable liquid with a distinctive amine-like odor. Pyrrolidine is commonly used as a building block in organic synthesis and can be found in various pharmaceuticals and agrochemicals. This compound is classified as a saturated heterocyclic amine, meaning it has a nitrogen atom in its ring structure. Pyrrolidine is also a component of some natural products and plays a role in the synthesis of pyrrolidine derivatives, which are important in medicinal chemistry.