L(+)-Arginine 74-79-3

Product Information

 

Product name	L(+)-Arginine； L-Arginine
CAS No.	74-79-3
Molecular Formula	C6H14N4O2
Molecular Weight	174.203
Quality Standard	99% up by HPLC, EP/USP
Appearance	White crystalline powder

 

COA

 

Test Items	Specifications	Results
Assay	98.5%~ 101.5% (dried basis)	99.6%
Identification	The IR spectrum conforms to that of Reference Standard	Conforms
Specific rotation	+26.3°~+27.7°	+27.2°
Loss on drying	≤0.5%	0.05%
Residue on ignition	≤ 0.3%	0.05%
Iron	≤30ppm	Conforms
Chloride	≤ 0.05%	Conforms
Sulfate	≤ 0.03%	Conforms
Individual impurity	≤ 0.5%	Conforms
Total impurities	≤ 2.0%	Conforms
Conclusion	It conforms to all the requirements of USP35.

 

Usage

 

‌L-Arginine (CAS 74-79-3)‌ is a multifunctional amino acid widely used in ‌nutritional supplements and pharmaceutical injections‌. It plays a vital role in ‌promoting growth hormone secretion, improving cardiovascular function, enhancing immunity, accelerating wound healing, and regulating metabolism‌. Due to its broad physiological benefits, it is commonly formulated into ‌sports nutrition products, immune-boosting supplements, and clinical treatments‌ such as amino acid infusions and wound recovery therapies. With high purity (≥99% HPLC) and compliance with ‌EP/USP standards‌, it is a trusted ingredient for both ‌dietary supplements and pharmaceutical applications‌.

 

1. Pharmaceutical Applications‌

(1) ‌Hepatic Encephalopathy (HE) Treatment‌

* Reduces blood ammonia levels by enhancing the urea cycle, commonly used as adjuvant therapy for hepatic coma (often combined with L-Ornithine L-Aspartate for synergistic effects).

* Requires renal function monitoring to avoid metabolic overload.

* Injectable formulations (e.g., amino acid infusions) support metabolic correction and neurological improvement.

(2) ‌Infusion Solutions‌: A key component in compound amino acid injections for nitrogen supplementation in postoperative recovery and critical care nutrition.

2. Sports Nutrition Applications‌

(1) ‌Nitric Oxide (NO) Booster

* Metabolized into NO to promote vasodilation, theoretically enhancing exercise endurance and muscle pump effect (though oral efficacy remains debated; IV administration shows more significant results).

* Frequently used in pre-workout supplements, often combined with L-Citrulline for improved bioavailability.

(2) ‌Muscle Recovery‌: Stimulates growth hormone secretion, supporting protein synthesis and tissue repair—commonly formulated in post-exercise recovery products