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(2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid

Also known as: Fmoc-cis-4-fluoro-Pro-OH, Fmoc-4S-Fl-Pro-OH, Fmoc-cis-4-FPro, N-Fmoc-cis-4-fluoro-L-proline, N-(9-fluorenylmethoxycarbonyl)-cis-4-fluoro-L-proline, (2S,4S)-1-(9H-fluoren-9-ylmethoxycarbonyl)-4-fluoropyrrolidine-2-carboxylic acid

(2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid (CAS 203866-19-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H18FNO4 and a molecular weight of 355.36000 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
203866-19-7
Jingsj CID
J-1454973-6
Molecular Formula
C20H18FNO4
Molecular Weight
355.36000 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Exact Mass355.12200
PSA66.84000
LogP3.37040

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid?

The CAS number of (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid is 203866-19-7.

What are the molecular formula and molecular weight of (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid?

(2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid has molecular formula C20H18FNO4 and molecular weight 355.36000 g/mol.

What are the upstream and downstream products of (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid?

For (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid, Upstream Products: 9-Fluorenylmethyl chloroformate, (2S,4S)-4-Fluoropyrrolidine-2-carboxylic acid, Fmoc-OSu.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "(2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-fluoropyrrolidine-2-carboxylic acid (CAS 203866-19-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1454973-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.