Synonym: (S)-Pyrrolidine-2-carboxylic acid
CAS Number: 147-85-3
Empirical Formula (Hill Notation): C5H9NO2
Molecular Weight: 115.13
Beilstein Registry Number: 808.10
EC Number: 205-702-2
MDL Number: MFCD00064318
PubChem Substance ID: 24887885
Other Notes
Protects enzymes against heat inactivation1; Growth requirement of various microorganisms2
Product line: BioUltra
Assay: ≥99.5% (NT)
Optical activity: [α]20/D −85.0±1.0°, c = 5% in H2O
Impurities: insoluble matter, passes filter test; ≤0.3% foreign amino acids
Ign. residue: ≤0.1%
Loss: ≤0.1% loss on drying, 20 °C (HV)
pH: 6.0-7.0 (25 °C, 1 M in H2O)
MP: 228 °C (dec.)(lit.)
Solubility: H2O: soluble1 M at 20 °C, clear, colorless
Anion traces: chloride (Cl-): ≤100 mg/kg; sulfate (SO42-): ≤100 mg/kg
| Cation traces | Al: ≤5 mg/kg |
| | As: ≤0.1 mg/kg |
| | Ba: ≤5 mg/kg |
| | Bi: ≤5 mg/kg |
| | 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 |
| | Li: ≤5 mg/kg |
| | Mg: ≤5 mg/kg |
| | Mn: ≤5 mg/kg |
| | Mo: ≤5 mg/kg |
| | NH4+: ≤20 mg/kg |
| | Na: ≤50 mg/kg |
| | Ni: ≤5 mg/kg |
| | Pb: ≤5 mg/kg |
| | Sr: ≤5 mg/kg |
| | Zn: ≤5 mg/kg |
λ: 1 M in H2O
UV absorption: λ: 260 nm Amax: 0.05; λ: 280 nm Amax: 0.05