2'-Fluoro-5-ethylarabinosyluracil

Also known as: 2'-Deoxy-2'-fluoro-5-ethyl-arabinouridine, 2'-Fluoro-5-ethyl-beta-D-arabinofuranosyluracil, 5-Ethyl-1-[(2R,3S,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione, 5-Ethyl-1-((2R,3S,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione, 1-(2-Deoxy-2-fluoroarabinofuranosyl)-5-ethyluracil, 5-Ethyl-2'-deoxy-2'-fluoro-beta-D-arabinouridine, 2,4(1H,3H)-Pyrimidinedione, 1-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-5-ethyl-

2'-Fluoro-5-ethylarabinosyluracil (CAS 83546-42-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H15FN2O5 and a molecular weight of 274.25 g/mol. Key property: a density of 1.6±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 83546-42-3
Jingsj CID: J-1462-0
Molecular Formula: C₁₁H₁₅FN₂O₅
Molecular Weight: 274.25 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.6±0.1 g/cm3
Exact Mass	290.091400
PSA	124.78000
LogP	-0.88
Refractive Index	1.587

Activity & Biological Data

Additional Information	[1]. Cavanagh BL, et al. Thymidine analogues for tracking DNA synthesis. Molecules. 2011 Sep 15;16(9):7980-93.

Frequently Asked Questions

What is the CAS number of 2'-Fluoro-5-ethylarabinosyluracil?

The CAS number of 2'-Fluoro-5-ethylarabinosyluracil is 83546-42-3.

What are the molecular formula and molecular weight of 2'-Fluoro-5-ethylarabinosyluracil?

2'-Fluoro-5-ethylarabinosyluracil has molecular formula C11H15FN2O5 and molecular weight 274.25 g/mol.

What are the upstream and downstream products of 2'-Fluoro-5-ethylarabinosyluracil?

For 2'-Fluoro-5-ethylarabinosyluracil, Upstream Products: 2-Deoxy-2-fluoro-alpha-D-arabinofuranosyl bromide 3,5-dibenzoate, 5-Ethyluracil, 2-Deoxy-2-fluoro-1,3,5-tri-O-benzoyl-α-D-arabinofuranose.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2'-Fluoro-5-ethylarabinosyluracil (CAS 83546-42-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1462-0 (accessed 2026-11-09).

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