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.
IUPAC: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid
PubChem
Physical & Chemical Properties
| Melting Point | 244 dec °C |
| Solubility | 182000 mg/L (at 25 °C) |
| pH | Strongly alkaline |
| Appearance | Dry Powder |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2922
Data: UN Comtrade
Suppliers on Chem-Exchange
No suppliers currently listing L-Arginine
List Your ProductsSafety Data Sheets
No SDS documents available
Upload an SDS document