N-Boc-cis-4-fluoro-L-proline
Also known as: (2S,4S)-1-(tert-Butoxycarbonyl)-4-fluoro-2-pyrrolidinecarboxylic Acid, (2S,4S)-1-(tert-Butoxycarbonyl)-4-fluoropyrrolidine-2-carboxylic acid, (2S,4S)-1-Boc-4-fluoro-2-pyrrolidinecarboxylic Acid, (2S,4S)-1-Boc-4-fluoro-2-pyrrolidinecarboxylic Acid, N-(tert-Butoxycarbonyl)-cis-4-fluoro-L-proline, N-Boc-cis-4-fluoro-L-proline, (2S,4S)-4-fluoropyrrolidine-2-carboxylic acid, N-BOC protected, (2S,4S)-4-fluoro-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acid, Boc-cis-4-fluoro-L-proline, Boc-cis-4-fluoro-Pro-OH, Boc-cis-Pro(4-F)-OH, Boc-flp-OH, MFCD04973957
N-Boc-cis-4-fluoro-L-proline (CAS 203866-13-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H16FNO4 and a molecular weight of 233.24 g/mol. Key properties include a melting point of 157-161.ºC, a boiling point of 346.0±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 163.0±27.9 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 203866-13-1
- Jingsj CID
- J-31760-2
- Molecular Formula
- C10H16FNO4
- Molecular Weight
- 233.24 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 157-161.ºC |
|---|---|
| Boiling Point | 346.0±42.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 163.0±27.9 °C |
| Exact Mass | 233.106339 |
| PSA | 66.84000 |
| LogP | 0.48 |
| Vapor Pressure | 0.0±1.6 mmHg at 25°C |
| Refractive Index | 1.488 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 N-Boc-cis-4-fluoro-L-proline?
The CAS number of N-Boc-cis-4-fluoro-L-proline is 203866-13-1.
What are the molecular formula and molecular weight of N-Boc-cis-4-fluoro-L-proline?
N-Boc-cis-4-fluoro-L-proline has molecular formula C10H16FNO4 and molecular weight 233.24 g/mol.
Is N-Boc-cis-4-fluoro-L-proline hazardous?
N-Boc-cis-4-fluoro-L-proline has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of N-Boc-cis-4-fluoro-L-proline?
For N-Boc-cis-4-fluoro-L-proline, Upstream Products: N-Boc-cis-4-fluoro-L-proline methyl ester, N-Boc-trans-4-hydroxy-L-proline methyl ester, Di-tert-butyl dicarbonate; Downstream Products: tert-butyl (2S,4S)-2-cyano-4-fluoropyrrolidine-1-carboxylate, (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "N-Boc-cis-4-fluoro-L-proline (CAS 203866-13-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31760-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.