L-Arginine

Molecular formula

Description

White crystalline powder; Molecular Formula: C₆H₁₄N₄O₂; Molecular Weight: 174.20; CAS No.: 74-79-3; Conditionally essential amino acid, precursor to nitric oxide (NO), supporting vasodilation and blood flow; component of the ornithine cycle.

Main Applications

L-Arginine is classified as a conditionally essential amino acid and is a core component of the ornithine (urea) cycle; critically, it acts as the direct precursor to nitric oxide (NO), the signaling molecule that mediates vasodilation and supports healthy blood flow. This mechanism explains its widespread use in sports nutrition products targeting muscle pump, endurance and growth hormone release, and it is further utilized in pharmaceutical preparations, dietary supplements and cosmetic formulations.