Synonyms: (S)-2-Amino-5-guanidinopentanoic acid
Formula: H2NC(=NH)NH(CH2)3CH(NH2)CO2H
Formula Weight: 174.20
CAS No.: 7429-90-5
Purity: ≥99.5% (NT)
Biochem/physiol Actions: Substrate of nitric oxide synthase, which is converted to citrulline and nitric oxide (NO). Induces insulin release by a nitric oxide-dependent mechanism.
Other Notes: Exhibits stabilizing effects on plant protoplasts1; pH drift correction in IEF of proteins2; Growth requirement of various microorganisms3.
λ: 0.5 M in H2O
Anion Traces: chloride (Cl-): ≤100 mg/kg
Assay: ≥99.5% (NT)
Autoignition Temp.: 1400°F
BP: 2460°C(lit.)
Cation Traces: Fe: ≤5 mg/kg
Density: 2.7 g/mL at 25°C(lit.)
Form: powder
Gene Information: human ... NOS1, NOS2
Ign. Residue: ≤0.05% (as SO4)
Impurities: insoluble matter, passes filter test
Loss: ≤0.1% loss on drying, 20 °C (HV)
MP: 222°C (dec.)(lit.)
Optical Activity: [α]20/D +27.0±0.5°, c = 5% in 5 M HCl
pH: 10.5-12.0 (25°C, 0.5 M in H2O)
Product Line: BioUltra
Resistivity: 2.6548 μΩ-cm
Solubility: H2O: soluble0.5 M at 20°C, clear, colorless
UV Absorption: λ: 280 nm Amax: ≤0.1