L-Tyrosine

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)/t8-/m0/s1

InChI key

OUYCCCASQSFEME-QMMMGPOBSA-N

SMILES string

N[C@@H](Cc1ccc(O)cc1)C(O)=O

assay

≥99.0% (NT)

optical activity

[α]20/D −11.5±1.0°, c = 4% in 1 M HCl

impurities

≤0.5% foreign amino acids

ign. residue

≤0.1% (as SO₄)

loss

≤0.5% loss on drying, 110 °C

mp

>300 °C (dec.) (lit.)

anion traces

chloride (Cl^-): ≤250 mg/kg, sulfate (SO₄^2-): ≤100 mg/kg

cation traces

Ca: ≤100 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤100 mg/kg, Mn: ≤5 mg/kg, NH₄⁺: ≤200 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg