Chemical substance record

Levetiracetam

102767-28-2C₈H₁₄N₂O₂170.212 g/mol

Organic/Inorganic Small MoleculeChEBI source record

A pyrrolidinone and carboxamide that is N-methylpyrrolidin-2-one in which one of the methyl hydrogens is replaced by an aminocarbonyl group, while another is replaced by an ethyl group (the S enantiomer). An anticonvulsant, it is used for the treatment of epilepsy in both human and veterinary medicine. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values

CAS number	102767-28-2	ChEBI ↗
Molecular formula	C₈H₁₄N₂O₂	ChEBI ↗
Molar mass	170.212 g/mol	ChEBI ↗
Monoisotopic mass	170.10553 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:6437	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	170.21 g/mol	PubChem ↗
Exact mass	170.105527694 Da	PubChem ↗
Computed XLogP	-0.3	PubChem ↗
Topological polar surface area (Å²)	63.4	PubChem ↗
H-bond donors	1	PubChem ↗
H-bond acceptors	2	PubChem ↗
Rotatable bonds	3	PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

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Source preferred name

levetiracetam

IUPAC name

(2S)-2-(2-oxopyrrolidin-1-yl)butanamide

InChIKey

HPHUVLMMVZITSG-LURJTMIESA-N

SMILES

CC[C@@H](C(N)=O)N1CCCC1=O

InChI

InChI=1S/C8H14N2O2/c1-2-6(8(9)12)10-5-3-4-7(10)11/h6H,2-5H2,1H3,(H2,9,12)/t6-/m0/s1

Names & synonyms

(2S)-2-(2-oxopyrrolidin-1-yl)butanamideKeppralevetiracetamum

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

pyrrolidin-2-onesChEBI parent class · 74223 ↗

organic heterocyclic compound organic molecular entity

Roles recorded in ChEBI

antidepressantanxiolytic drugantipsychotic agentantineoplastic agentanticonvulsantxenobioticantiparkinson druganti-anaemic agentenvironmental contaminant

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass

Amount

Input unit

Equivalent amount

0.00587503 mol

Uses 170.212 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

C

Carbon · 8 atoms

56.45%

O

Oxygen · 2 atoms

18.80%

N

Nitrogen · 2 atoms

16.46%

H

Hydrogen · 14 atoms

8.29%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations

Positive impact of levetiracetam on emotional learning and memory in naive mice. ↗Life sciences · 2012 Jan 30 · PMID 22119754

Levetiracetam as alternative stage two antiepileptic drug in status epilepticus: a systematic review. ↗Seizure · 2012 May · PMID 22321334

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Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:6437

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

Additional molecular descriptorsNCBI PubChem · CID 5284583 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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