L-Arginine Hydrochloride, L-Arginine HCL, 1119-34-2

L-Arginine Hydrochloride, L-Arginine HCL, 1119-34-2

Chemical Identity

• Chemical Name: L-Arginine Hydrochloride

• Molecular Formula: C₆H₁₄N₄O₂·HCl

• Molecular Weight: 210.66 g/mol

• CAS Number: 1119-34-2

• IUPAC Name: (S)-2-amino-5-guanidinopentanoic acid hydrochloride

Physical Properties

• Appearance: White crystalline powder

• Solubility: Highly soluble in water (better than free base L-Arginine)

• pH: Slightly acidic due to hydrochloride salt

• Stability: More stable than free base form; longer shelf life

• Storage: Keep sealed, dry, and away from heat; shelf life ~2 years

Functional Role

• Nitric Oxide Precursor: Enhances vasodilation, blood flow, and oxygen delivery

• Protein Metabolism: Incorporated into proteins as a coding amino acid

• Hormonal Regulation: Stimulates pituitary gland to release growth hormone

• Detoxification: Supports urea cycle, reducing ammonia levels in blood

Applications

Pharmaceutical / Medical

• Used in formulations for cardiovascular support (blood pressure regulation, vascular health)

• Intravenous testing of pituitary function (growth hormone release)

• Wound healing and tissue regeneration

• Supportive treatment in liver disorders and hyperammonemia

Sports Nutrition

• Popular in pre-workout supplements for “pump” effect

• Improves endurance and recovery by boosting nitric oxide synthesis

• Often combined with creatine, BCAA, or citrulline

Food / Nutraceuticals

• Added to functional foods, protein bars, and sports drinks

• Immune-support supplements

Veterinary / Animal Nutrition

• Amino acid source in specialized feed formulations

Research / Biotechnology

• Used in cell culture media as a nitrogen source

• Studied in nitric oxide pathway experiments

Commercial Formats

• Pharma/Food Grade: 25 kg fiber drum or HDPE bag

• Consumer Supplements: 300–500 g jars, capsules, tablets

• Documentation: COA, TDS, GMP/ISO certificates required for compliance

Key Differences vs. L-Arginine (Base Form)