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(3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one

Also known as: TF-BF, Tafluprost intermediate, Tafluprost impurity 15, Latanoprost impurity 21, Prostaglandin impurity 38, 2H-Cyclopenta[b]furan-2-one, 5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-, (3aR,4R,5R,6aS)-, (3aR,4R,5R,6aS)-4-((E)-3,3-difluoro-4-phenoxybut-1-en-1-yl)-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl benzoate, [(3aR,4R,5R,6aS)-4-[(E)-3,3-difluoro-4-phenoxybut-1-enyl]-2-oxo-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-5-yl] benzoate

(3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one (CAS 209861-00-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C24H22F2O5 and a molecular weight of 428.425 g/mol. Key properties include a boiling point of 588.3±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 298.1±25.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
209861-00-7
Jingsj CID
J-1458227-5
Molecular Formula
C24H22F2O5
Molecular Weight
428.425 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point588.3±50.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point298.1±25.0 °C
Exact Mass428.143524
PSA61.83000
LogP4.29
Vapor Pressure0.0±1.6 mmHg at 25°C
Refractive Index1.579

Frequently Asked Questions

What is the CAS number of (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one?

The CAS number of (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one is 209861-00-7.

What are the molecular formula and molecular weight of (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one?

(3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one has molecular formula C24H22F2O5 and molecular weight 428.425 g/mol.

What are the upstream and downstream products of (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one?

For (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one, Upstream Products: (3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(E)-3-oxo-4-phenoxybut-1-en-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one, Dimethyl (2-oxo-3-phenoxypropyl)phosphonate, (-)-Corey aldehyde benzoate; Downstream Products: Tafluprost 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. "(3aR,4R,5R,6aS)-5-(benzoyloxy)-4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-2H-cyclopenta[b]furan-2-one (CAS 209861-00-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1458227-5 (accessed 2026-11-09).

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