L-ARGININE

L-Arginine is a naturally occurring, semi-essential amino acid that plays a critical role in protein synthesis, nitric oxide production, and metabolic regulation in biological systems.
L-Arginine is widely used in pharmaceutical, nutraceutical, food, cosmetic, and clinical nutrition applications due to its physiological importance and good safety profile.
L-Arginine serves as a key precursor for nitric oxide, supporting vascular function, immune response, and cellular signaling pathways.

CAS Number: 74-79-3
EC Number: 200-811-1
Molecular Formula: C₆H₁₄N₄O₂
Molecular Weight: 174.20 g/mol

Synonyms: L-Arginine, (S)-2-Amino-5-guanidinopentanoic acid, Arginine, Proteinogenic Arginine, L-Arg, (S)-2-Amino-5-guanidinopentanoic Acid, (S)-Arginine, Proteinogenic Amino Acid Arginine, Semi-Essential Amino Acid Arginine, Basic Amino Acid Arginine, Guanidino Amino Acid, Alpha-Amino Acid Arginine, L-Arginine Free Base, L-Arginine Amino Acid, L-Arginine USP, L-Arginine EP, L-Arginine BP, L-Arginine JP, L-Arginine FCC, Pharmaceutical Grade L-Arginine, Food Grade L-Arginine, Nutraceutical Grade L-Arginine, Cosmetic Grade L-Arginine, Feed Grade L-Arginine, Technical Grade L-Arginine, High-Purity L-Arginine, Pure L-Arginine, Extra-Pure L-Arginine, L-Arginine Powder, L-Arginine Crystalline, L-Arginine Granular, L-Arginine Micronized, Fermented L-Arginine, Bio-Based L-Arginine, Natural L-Arginine, L-Arginine Supplement Ingredient, L-Arginine Dietary Ingredient, L-Arginine Functional Ingredient, L-Arginine Nutritional Additive, L-Arginine Sports Nutrition Ingredient, L-Arginine Bodybuilding Amino Acid, L-Arginine Pre-Workout Ingredient, L-Arginine Nitric Oxide Precursor, L-Arginine NO Booster, L-Arginine Vasodilation Support Compound, L-Arginine Cardiovascular Support Amino Acid, L-Arginine Immune Support Amino Acid, L-Arginine Metabolic Amino Acid, L-Arginine Protein Synthesis Amino Acid, L-Arginine Cell Signaling Amino Acid, L-Arginine Wound Healing Amino Acid, L-Arginine Pharmaceutical Excipient, L-Arginine Medical Nutrition Ingredient, L-Arginine Chemical Raw Material, L-Arginine Fine Chemical, L-Arginine Specialty Chemical

APPLICATIONS

L-Arginine is used in dietary supplements.
L-Arginine supports nitric oxide production and blood flow.
L-Arginine is commonly formulated for cardiovascular and sports nutrition products.

L-Arginine is applied in pharmaceutical formulations.
L-Arginine is used in clinical nutrition and parenteral solutions.
L-Arginine supports immune function and wound healing.

L-Arginine is used in medical nutrition therapy.
L-Arginine is included in formulations for post-surgical recovery.
L-Arginine supports tissue repair and collagen synthesis.

L-Arginine is used in food and beverage products.
L-Arginine functions as a nutritional fortifier.
L-Arginine contributes to amino acid balance in specialized diets.

L-Arginine is applied in cosmetic and personal care products.
L-Arginine functions as a skin-conditioning agent.
L-Arginine helps support skin hydration and barrier function.

L-Arginine is used in biotechnology and research.
L-Arginine serves as a reagent in biochemical studies.
L-Arginine is involved in cell culture and fermentation processes.

L-Arginine is used in dietary supplements to support cardiovascular health.
L-Arginine contributes to nitric oxide production in the human body.
L-Arginine supports healthy blood circulation and vascular function.

L-Arginine is used in sports nutrition products.
L-Arginine improves blood flow during physical exercise.
L-Arginine supports muscle pump and endurance performance.

L-Arginine is used in clinical nutrition formulations.
L-Arginine supports recovery in patients with metabolic stress.
L-Arginine improves nitrogen balance in medical nutrition products.

L-Arginine is used in pharmaceutical formulations.
L-Arginine acts as an active ingredient in treatments for cardiovascular conditions.
L-Arginine supports therapeutic nitric oxide pathways.

L-Arginine is used in wound healing products.
L-Arginine supports collagen synthesis and tissue repair.
L-Arginine improves healing response in damaged tissues.

L-Arginine is used in immune support supplements.
L-Arginine enhances immune cell function.
L-Arginine supports immune response under stress conditions.

L-Arginine is used in fertility and reproductive health products.
L-Arginine improves blood flow to reproductive organs.
L-Arginine supports sperm motility and quality.

L-Arginine is used in pediatric nutrition under medical supervision.
L-Arginine supports growth and metabolic development.
L-Arginine contributes to protein synthesis in growing individuals.

L-Arginine is used in animal feed supplements.
L-Arginine improves growth performance in livestock.
L-Arginine supports immune health in animal nutrition.

L-Arginine is used in aquaculture feed formulations.
L-Arginine enhances growth and stress resistance in fish.
L-Arginine improves feed efficiency in aquatic species.

L-Arginine is used in cosmetic formulations.
L-Arginine supports skin hydration and barrier function.
L-Arginine improves skin vitality in topical products.

L-Arginine is used in oral care products.
L-Arginine supports enamel remineralization in toothpaste formulations.
L-Arginine improves oral health through pH regulation.

L-Arginine is used in laboratory research.
L-Arginine supports studies on nitric oxide metabolism.
L-Arginine is used as a biochemical reagent in research applications.

L-Arginine serves as a precursor to nitric oxide.
L-Arginine plays a key role in protein synthesis and metabolism.
L-Arginine supports cellular signaling pathways.

L-Arginine is involved in immune system regulation.
L-Arginine supports hormone secretion and metabolic functions.
L-Arginine is commonly obtained from dietary sources and supplements.

DESCRIPTION

L-Arginine is a white to off-white crystalline powder.
L-Arginine is odorless or has a very slight characteristic odor.
L-Arginine has a slightly bitter taste.

L-Arginine is highly polar and strongly hydrophilic.
L-Arginine readily dissolves in water forming clear solutions.
L-Arginine exists as a zwitterion depending on pH conditions.

L-Arginine participates in multiple metabolic pathways.
L-Arginine is a precursor for nitric oxide, creatine, and polyamines.
L-Arginine plays an essential role in nitrogen metabolism.

L-Arginine is stable under normal storage conditions.
L-Arginine is not hygroscopic under standard humidity levels.
L-Arginine should be protected from excessive heat and moisture.

L-Arginine is a semi-essential amino acid naturally present in the human body.
L-Arginine has the chemical formula C₆H₁₄N₄O₂.
L-Arginine appears as a white crystalline powder.

L-Arginine is odorless and has a slightly bitter taste.
L-Arginine is highly soluble in water.
L-Arginine participates in the urea cycle and nitric oxide synthesis.

L-Arginine should be stored in a cool, dry place.
L-Arginine should be protected from moisture and excessive heat.
L-Arginine is valued for its multifunctional physiological and nutritional benefits.

PROPERTIES

Chemical Formula: C₆H₁₄N₄O₂
Molecular Weight: 174.20 g/mol
Appearance: White to off-white crystalline powder
Odor: Odorless or faint characteristic odor
Taste: Slightly bitter
Density: ~1.35 g/cm³ (true density)
Melting Point: ~220–225°C (decomposes)
Boiling Point: Not applicable; decomposes before boiling
Solubility in Water: Highly soluble; ~150 g/L at 25°C
Solubility in Alcohol: Practically insoluble
pKa Values: ~2.17 (carboxyl), ~9.04 (amino), ~12.48 (guanidino)
pH (1% aqueous solution): ~10.5–12.0
Isoelectric Point (pI): ~10.76
Hygroscopicity: Low
Optical Rotation: [α]D ≈ +27° (c = 8, 6N HCl)
Thermal Stability: Stable below decomposition temperature
Chemical Stability: Stable under neutral and alkaline conditions
Storage Temperature: Store at ambient temperature in dry conditions

FIRST AID

Inhalation:
Move to fresh air if dust is inhaled.
Seek medical attention if irritation persists.

Skin Contact:
Wash with water.
Generally non-irritating.

Eye Contact:
Rinse with water for several minutes.
Seek medical advice if discomfort continues.

Ingestion:
Rinse mouth and drink water.
Seek medical advice if excessive amounts are consumed.

Note to Physicians:
Treat symptomatically.

HANDLING AND STORAGE

Handling:
Avoid generating dust.
Use standard industrial hygiene practices.
Ensure adequate ventilation during handling.

Avoidance:
Avoid exposure to excessive moisture.
Avoid strong oxidizing agents.

Spill Procedures:
Sweep up mechanically and avoid dust formation.
Dispose of according to local regulations.

Storage:
Store in tightly closed containers.
Keep in a cool, dry, well-ventilated area.
Protect from heat and humidity to maintain product quality.