L

L-Arginine

IUPAC: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid

C6H14N4O2 Organic Compounds CAS 74-79-3
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Quick Reference
Formula / NotationC6H14N4O2
CAS Number74-79-3
Molecular Weight174.20
Melting Point244 dec °C
Solubility182000 mg/L (at 25 °C)
AppearanceDry Powder
Also Known As(2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid; arginine; 74-79-3; L-(+)-Arginine; (S)-2-Amino-5-guanidinopentanoic acid; L-Arg; Arginina; ARGININE, L-; Argininum; L-alpha-Amino-delta-guanidinovaleric acid
CategoryOrganic Compounds

What is L-Arginine?

L-arginine is an L-alpha-amino acid that is the L-isomer of arginine. It has a role as a micronutrient, a nutraceutical, a biomarker, a mouse metabolite and an Escherichia coli metabolite. It is a L-alpha-amino acid, a glutamine family amino acid, an arginine and a proteinogenic amino acid. It is a conjugate base of a L-argininium(1+). It is a conjugate acid of a L-argininate. It is an enantiomer of a D-arginine.

Formula & Notation

C6H14N4O2

IUPAC Name: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid

Other Names / Synonyms: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid; arginine; 74-79-3; L-(+)-Arginine; (S)-2-Amino-5-guanidinopentanoic acid; L-Arg; Arginina; ARGININE, L-; Argininum; L-alpha-Amino-delta-guanidinovaleric acid

Properties & Characteristics

Appearance: Dry Powder. Molecular formula: C6H14N4O2. Molecular weight: 174.20 g/mol. Melting point: 244 dec °C. Solubility: 182000 mg/L (at 25 °C). LogP: -4.2.

Physical Data

PropertyValue
Melting Point244 dec °C
Molecular Weight174.20
Solubility182000 mg/L (at 25 °C)
AppearanceDry Powder

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term L-Arginine
Formula C6H14N4O2
CAS Number 74-79-3
Molecular Weight 174.20
Synonyms (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid; arginine; 74-79-3; L-(+)-Arginine; (S)-2-Amino-5-guanidinopentanoic acid; L-Arg; Arginina; ARGININE, L-; Argininum; L-alpha-Amino-delta-guanidinovaleric acid

Frequently Asked Questions

L-arginine is an L-alpha-amino acid that is the L-isomer of arginine. It has a role as a micronutrient, a nutraceutical, a biomarker, a mouse metabolite and an Escherichia coli metabolite. It is a L-alpha-amino acid, a glutamine family amino acid, an arginine and a proteinogenic amino acid. It is a conjugate base of a L-argininium(1+). It is a conjugate acid of a L-argininate. It is an enantiomer of a D-arginine.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.