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L- Arginine Amino acid
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Description
L-Arginine
Other Names: 2-Amino-5-guanidinopentanoic acid, L-Arg
CAS Number: 74-79-3
Chemical Formula: C₆H₁₄N₄O₂
Molar Mass: 174.20 g/mol
Appearance: White crystalline powder
L-Arginine is a basic amino acid naturally occurring in the human body and many proteins. It plays a key role in protein synthesis and serves as a precursor to nitric oxide, a molecule involved in vasodilation and cellular signaling. L-Arginine is classified as semi-essential, meaning it becomes essential under certain physiological conditions or health states.
Chemical and Physical Properties
Density: 1.3 g/cm³
Melting Point: ~244°C (decomposes)
Solubility in Water: Soluble (15 g/100 mL at 25°C)
Solubility in Other Solvents: Slightly soluble in ethanol, practically insoluble in ether
Odor: Odorless
Taste: Slightly sweet
Applications
Biochemistry: Used as a building block for proteins and as a precursor for the biosynthesis of nitric oxide, creatine, and urea.
Chemical Synthesis: Employed as an intermediate in organic synthesis.
Laboratory Use: Used in buffer formulations and in cell culture media.
Safety
Signal Word: Warning
P264+P265, P280, P305+P351+P338, and P337+P317
Handling and Storage
Storage Conditions: Store in a tightly closed container in a cool, dry, and well-ventilated place.
Handling Precautions: Avoid contact with eyes and prolonged exposure to dust. Use appropriate personal protective equipment.