Home/Chemicals/56-84-8

Chemical substance record

L-aspartic acid

56-84-8C₄H₇NO₄133.103 g/mol

Organic/Inorganic Small MoleculeChEBI source record

The L-enantiomer of aspartic acid. — 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	56-84-8	ChEBI ↗
Molecular formula	C₄H₇NO₄	ChEBI ↗
Molar mass	133.103 g/mol	ChEBI ↗
Monoisotopic mass	133.03751 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:17053	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	133.10 g/mol	PubChem ↗
Exact mass	133.03750770 Da	PubChem ↗
Computed XLogP	-2.8	PubChem ↗
Topological polar surface area (Å²)	101	PubChem ↗
H-bond donors	3	PubChem ↗
H-bond acceptors	5	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-aspartic acid

IUPAC name

(2S)-2-aminobutanedioic acid

InChIKey

CKLJMWTZIZZHCS-REOHCLBHSA-N

SMILES

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

InChI

InChI=1S/C4H7NO4/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H,6,7)(H,8,9)/t2-/m0/s1

Names & synonyms

(2S)-2-aminobutanedioic acid

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

Classification & relationships

ChEBI ontology

L-alpha-amino acidChEBI parent class · 15705 ↗aspartate family amino acidChEBI parent class · 22658 ↗aspartic acidChEBI parent class · 22660 ↗proteinogenic amino acidChEBI parent class · 83813 ↗

carboxylic acid amino acid organic molecular entity

Roles recorded in ChEBI

neurotransmittermouse metaboliteEscherichia coli 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

0.00751298 mol

Uses 133.103 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

O

Oxygen · 4 atoms

48.08%

C

Carbon · 4 atoms

36.10%

N

Nitrogen · 1 atom

10.52%

H

Hydrogen · 7 atoms

5.30%

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

A novel inhibitor of beta-glucuronidase: L-aspartic acid. ↗Pediatric research · 2001 Oct · PMID 11568288

The human serum metabolome. ↗PloS one · 2011 Feb 16 · PMID 21359215

Search PubMed Google Scholar

Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:17053

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

Additional molecular descriptorsNCBI PubChem · CID 5960 · 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