L-Valine

InChI

1S/C5H11NO2/c1-3(2)4(6)5(7)8/h3-4H,6H2,1-2H3,(H,7,8)/t4-/m0/s1

InChI key

KZSNJWFQEVHDMF-BYPYZUCNSA-N

SMILES string

CC(C)[C@H](N)C(O)=O

assay

≥99.0% (NT)

optical activity

[α]20/D +27±1°, c = 5% in 5 M HCl

impurities

≤0.3% foreign amino acids

ign. residue

≤0.1% (as SO₄)

loss

≤0.1% loss on drying, 110 °C

mp

295-300 °C (subl.) (lit.)

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

Ca: ≤50 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: ≤5 mg/kg, Mn: ≤5 mg/kg, NH₄⁺: ≤150 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg