| CAS | 147-85-3 |
| Structure |  |
| Synonyms | L-Proline |
| IUPAC Name | (2S)-pyrrolidine-2-carboxylic acid |
| Molecular Weight | 115.13 |
| Molecular Formula | C5H9NO2 |
| Canonical SMILES | C1C[C@H](NC1)C(=O)O |
| InChI | 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 |
| Melting Point | 228 °C (lit.) |
| Purity | 99-101% |
| Density | 1.35 g/ml |
| Refractive Index | -85 ° (C=4, H2O) |
| pKa | pK1: 1.95, pK2: 10.64 (25°C) |
| pH | 6.0-7.0 (1M, H2O, 25°C) |
| Solubility in Water | Soluble |
| Appearance | White powder |
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