1.08371

L-Tyrosine

for biochemistry

• Synonym(s): L-Tyrosine, 4-Hydroxyphenylalanine, Tyr
• Empirical Formula (Hill Notation): C₉H₁₁NO₃
• CAS Number: 60-18-4
• Molecular Weight: 181.19
• MDL number: MFCD00002606
• UNSPSC Code: 12352209
• EC Index Number: 200-460-4
• NACRES: NA.21

Properties

• 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
• 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

Description

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 %

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1