L-Arginine, ≥99% BR Grade Amino Acid Reagent

L-Arginine is a high-purity BR grade amino acid reagent widely used in biochemical, molecular biology, and physiological research. Supplied as a white crystalline powder, it exhibits excellent water solubility and strong basicity, making it suitable for a wide range of laboratory applications.

🔬 Applications

• Biochemical and molecular biology research

• Amino acid metabolism studies

• Enzymatic and analytical research

• Laboratory R&D and reference use

📦 Product Specifications

• Product Name: L-Arginine

• English Name: L-Arginine

• Other Names:

  • L-1-Amino-4-guanidovaleric acid

  • L-2-Amino-5-guanidinovaleric acid

  • L-α-Amino-δ-guanidovaleric acid

  • L-Guanidine aminovaleric acid

  • Nδ-Amidino-L-ornithine

• CAS Number: 74-79-3

• Molecular Formula: C₆H₁₄N₄O₂

• Molecular Weight: 174.20

• Grade: BR (Biochemical Reagent)

• Package Size: 100 g / bottle

• Storage Condition: Room temperature (RT)

• Shelf Life: 3 years

🧾 Quality Specifications

• Assay: ≥ 99.0%

• Specific Rotation: +26.9° to +27.9°

• pH (aqueous solution): 10.5 – 12.0

• Chloride: ≤ 0.02%

• Ammonium Salts: ≤ 0.02%

• Sulfate: ≤ 0.02%

• Iron (Fe): ≤ 10 ppm

• Heavy Metals: ≤ 10 ppm

• Arsenic (As): ≤ 1 ppm

• Loss on Drying: ≤ 0.5%

• Residue on Ignition: ≤ 0.1%

⚗️ Physical & Chemical Properties (for reference)

• Appearance: White crystalline powder or prismatic crystals

• Solubility: Soluble in water, slightly soluble in ethanol, insoluble in ether

• Water Solubility: 148.7 g/L at 20 °C

• Chemical Nature: Strongly basic