L-Proline

Assay

≥99.0% (NT)

form

crystalline powder

optical activity

[α]20/D −84.5±1°, c = 5% in H₂O

impurities

≤0.3% foreign amino acids

ign. residue

≤0.1% (as SO₄)

loss

≤0.2% loss on drying, 110 °C

color

white

mp

228 °C (dec.) (lit.)

anion traces

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

cation traces

Ca: ≤10 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⁺: ≤20 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

OC(=O)[C@@H]1CCCN1

InChI

1S/C5H9NO2/c7-5(8)4-2-1-3-6-4/h4,6H,1-3H2,(H,7,8)/t4-/m0/s1

InChI key

ONIBWKKTOPOVIA-BYPYZUCNSA-N