Term Name:	pyrrolidin-2-one
Synonyms:	1-azacyclopentan-2-one, 2-ketopyrrolidine, 2-oxopyrrolidine, 2-pyrrolidinone, 2-pyrrolidone, 4-aminobutyric acid lactam, alpha-pyrrolidinone, alpha-pyrrolidone, Butyrolactam, gamma-aminobutyric acid lactam, gamma-aminobutyric lactam, gamma-butyrolactam, pyrrolidin-2-one, Pyrrolidinone, Pyrrolidone
Definition:	The simplest member of the class of pyrrolidin-2-ones, consisting of pyrrolidine in which the hydrogens at position 2 are replaced by an oxo group. The lactam arising by the formal intramolecular condensation of the amino and carboxy groups of gamma-aminobutyric acid (GABA).
Ontology:	ChEBI [CHEBI:36592]  ( EBI )