Home/Chemicals/70-47-3

Chemical substance record

L-asparagine

70-47-3C₄H₈N₂O₃132.119 g/mol

Organic/Inorganic Small MoleculeChEBI source record

An optically active form of asparagine having L-configuration. — ChEBI

Safety references

Safety documents & references

Supplier matching matters

Find the safety document for your specific supplier, product number and grade.

Find a product-specific SDS

Search SDS PDFs Sigma-Aldrich Thermo Fisher

Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.

Identity & molecular properties

Source-linked values

CAS number	70-47-3	ChEBI ↗
Molecular formula	C₄H₈N₂O₃	ChEBI ↗
Molar mass	132.119 g/mol	ChEBI ↗
Monoisotopic mass	132.05349 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:17196	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	132.12 g/mol	PubChem ↗
Exact mass	132.05349212 Da	PubChem ↗
Computed XLogP	-3.4	PubChem ↗
Topological polar surface area (Å²)	106	PubChem ↗
H-bond donors	3	PubChem ↗
H-bond acceptors	4	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

Copy any identifier

Source preferred name

L-asparagine

IUPAC name

L-asparagine

InChIKey

DCXYFEDJOCDNAF-REOHCLBHSA-N

SMILES

NC(=O)C[C@H](N)C(=O)O

InChI

InChI=1S/C4H8N2O3/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H2,6,7)(H,8,9)/t2-/m0/s1

Classification & relationships

ChEBI ontology

L-alpha-amino acidChEBI parent class · 15705 ↗asparagineChEBI parent class · 22653 ↗aspartate family amino acidChEBI parent class · 22658 ↗proteinogenic amino acidChEBI parent class · 83813 ↗

carboxylic acid amino acid organic molecular entity

Roles recorded in ChEBI

micronutrientnutraceuticalmouse metaboliteSaccharomyces cerevisiae metaboliteplant metaboliteEscherichia coli metabolitehuman metabolite

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

0.00756893 mol

Uses 132.119 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 · 4 atoms

36.36%

O

Oxygen · 3 atoms

36.33%

N

Nitrogen · 2 atoms

21.20%

H

Hydrogen · 8 atoms

6.10%

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

Serious neutropenia in ALL patients treated with L-asparaginase may be avoided by therapeutic monitoring of the enzyme activity in the circulation. ↗Therapeutic drug monitoring · 2002 Aug · PMID 12142634

Propensity of amino acids in loop regions connecting beta-strands. ↗Protein and peptide letters · 2005 May · PMID 15907185

Search PubMed Google Scholar

Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:17196

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

Additional molecular descriptorsNCBI PubChem · CID 6267 · 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.

How this record was assembled Suggest a correction