L-Proline
Also known as: (S)-Proline, (-)-Proline, 2-Pyrrolidinecarboxylic acid, (2S)-2-Pyrrolidinecarboxylic acid, L-2-Pyrrolidinecarboxylic acid, MFCD00064318, L-(-)-Proline, (-)-(S)-Proline, (S)-2-Carboxypyrrolidine, Pyrrolidine-2-carboxylic acid, (S)-
L-Proline (CAS 147-85-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H9NO2 and a molecular weight of 115.131 g/mol. Key properties include a melting point of 228 °C (dec.)(lit.), a boiling point of 252.2±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 106.3±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 147-85-3
- Jingsj CID
- J-1032525-8
- Molecular Formula
- C5H9NO2
- Molecular Weight
- 115.131 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 228 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 252.2±33.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 106.3±25.4 °C |
| Exact Mass | 115.063332 |
| PSA | 49.33000 |
| LogP | -0.57 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.487 |
| Additional Property | soluble |
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of L-Proline?
The CAS number of L-Proline is 147-85-3.
What are the molecular formula and molecular weight of L-Proline?
L-Proline has molecular formula C5H9NO2 and molecular weight 115.131 g/mol.
What are the upstream and downstream products of L-Proline?
For L-Proline, Upstream Products: N-Benzyloxycarbonyl-L-proline, Boc-L-Proline, L-Proline, 1-(2-propenyl)- (9CI); Downstream Products: (2R)-1-benzylpyrrolidine-2-carbonyl chloride, (S)-1-((Allyloxy)carbonyl)pyrrolidine-2-carboxylic acid, N-Methyl-L-proline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "L-Proline (CAS 147-85-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1032525-8 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.