1.08371

L-Tyrosine

for biochemistry

• Synonym(e): L-Tyrosine, 4-Hydroxyphenylalanine, Tyr
• Empirische Formel (Hill-System): C₉H₁₁NO₃
• CAS-Nummer: 60-18-4
• Molekulargewicht: 181.19
• UNSPSC Code: 12352209
• EC Index Number: 200-460-4
• NACRES: NA.21
• MDL number: MFCD00002606

Eigenschaften

• Quality Level: 100
• form: crystalline powder
• potency: >5110 mg/kg LD₅₀, oral (Rat)
• pH: 6.5 (0.1 g/L in H₂O)
• mp: 297-298 °C (decomposition)
• solubility: 0.38 g/L
• density: 1.46 g/cm³ at 20 °C
• bulk density: 300 kg/m³
• storage temp.: 2-30°C
• SMILES string: [N+H3]C(Cc1ccc(cc1)O)C(=O)[O-]
• InChI: 1S/C9H11NO3/c10-8(9(12)13)5-6-1-3-7(11)4-2-6/h1-4,8,11H,5,10H2,(H,12,13)
• InChI key: OUYCCCASQSFEME-UHFFFAOYSA-N

Beschreibung

Analysis Note

• Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %
• Identity (IR-spectrum): passes test
• Appearance: white, crystalline powder or colorless crystals
• Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): -11.3 to -12.1
• Chloride (Cl): ≤ 0.02 %
• Sulfate (SO₄): ≤ 0.01 %
• Heavy metals (as Pb): ≤ 0.001 %
• As (Arsenic): ≤ 0.0005 %
• Ca (Calcium): ≤ 0.001 %
• Co (Cobalt): ≤ 0.0005 %
• Fe (Iron): ≤ 0.0005 %
• K (Potassium): ≤ 0.0005 %
• Mg (Magnesium): ≤ 0.0005 %
• Na (Sodium): ≤ 0.01 %
• NH₄ (Ammonium): ≤ 0.01 %
• Zn (Zinc): ≤ 0.0005 %
• L-Phenylalanine: ≤ 0.5 %
• other foreign amino acids: ≤ 0.2 %
• Other ninhydrine positive substances: ≤ 0.1 %
• Loss on drying (105 °C; 3 h): ≤ 0.2 %

Sicherheitshinweise

• Lagerklasse: 13 - Non Combustible Solids
• wgk: WGK 1