L-ArginineProduct SpecificationAlternative Name: H-L-Arg-OH Formula: C6H14N4O2 MW: 174.2 CAS: 74-79-3 MI: 14: 780 RTECS: CF1934200 Purity: ≥98% (TLC; elemental analysis) Appearance: White powder. Solubility: Soluble in water. Long Term Storage: Ambient Miscellaneous/General: Physiological precursor for the formation of nitric oxide (NO) by nitric oxide synthase (NOS). Enhances the release of NO.