Home/Chemicals/74-79-3

Chemical substance record

L-arginine

74-79-3C₆H₁₄N₄O₂174.204 g/mol

Organic/Inorganic Small MoleculeChEBI source record

An L-α-amino acid that is the L-isomer of arginine. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values

CAS number	74-79-3	ChEBI ↗
Molecular formula	C₆H₁₄N₄O₂	ChEBI ↗
Molar mass	174.204 g/mol	ChEBI ↗
Monoisotopic mass	174.11168 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:16467	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	174.20 g/mol	PubChem ↗
Exact mass	174.11167570 Da	PubChem ↗
Computed XLogP	-4.2	PubChem ↗
Topological polar surface area (Å²)	128	PubChem ↗
H-bond donors	4	PubChem ↗
H-bond acceptors	4	PubChem ↗
Rotatable bonds	5	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

L-arginine

IUPAC name

L-arginine

InChIKey

ODKSFYDXXFIFQN-BYPYZUCNSA-N

SMILES

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

InChI

InChI=1S/C6H14N4O2/c7-4(5(11)12)2-1-3-10-6(8)9/h4H,1-3,7H2,(H,11,12)(H4,8,9,10)/t4-/m0/s1

Names & synonyms

arginine

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 ↗glutamine family amino acidChEBI parent class · 24318 ↗arginineChEBI parent class · 29016 ↗proteinogenic amino acidChEBI parent class · 83813 ↗

carboxylic acid amino acid organic molecular entity

Roles recorded in ChEBI

micronutrientnutraceuticalbiomarkermouse 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

0.0057404 mol

Uses 174.204 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 · 6 atoms

41.37%

N

Nitrogen · 4 atoms

32.16%

O

Oxygen · 2 atoms

18.37%

H

Hydrogen · 14 atoms

8.10%

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

Anaphylaxis to chlorhexidine. Case report. Implication of immunoglobulin E antibodies and identification of an allergenic determinant. ↗Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2000 Jul · PMID 10848923

L-Arginine: a novel therapy for coronary artery disease? ↗Expert opinion on investigational drugs · 1999 Nov · PMID 11139824

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Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:16467

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

Additional molecular descriptorsNCBI PubChem · CID 6322 · 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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