MilliporeSigma
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1.08371

Millipore

L-Tyrosine

for biochemistry

Synonym(s):
L-Tyrosine, 4-Hydroxyphenylalanine, Tyr
Empirical Formula (Hill Notation):
C9H11NO3
CAS Number:
Molecular Weight:
181.19
MDL number:
EC Index Number:
200-460-4

Quality Level

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

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): -11.0 to -12.3
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): ≤ 0.3 %

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

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