![Molecular structure of (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one (CAS 209861-01-8)](/images/chem_structures_svg/153/209861-01-8.svg)
(3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one
Also known as: TF-HF, Latanoprost Impurity 22, Prostaglandin Impurity 39, Tafluprost Impurity 16, (1S,5R,6R,7R)-2-oxa-7-hydroxy-6-[(1E)-3,3-difluoro-4-phenoxy-1-butenyl]bicyclo[3.3.0]octan-3-one, 2H-Cyclopenta[b]furan-2-one, 4-[(1E)-3,3-difluoro-4-phenoxy-1-buten-1-yl]hexahydro-5-hydroxy-, (3aR,4R,5R,6aS)-
(3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one (CAS 209861-01-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C17H18F2O4 and a molecular weight of 324.319 g/mol. Key properties include a boiling point of 484.2±45.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 246.6±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 209861-01-8
- Jingsj CID
- J-1458228-6
- Molecular Formula
- C17H18F2O4
- Molecular Weight
- 324.319 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 484.2±45.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 246.6±28.7 °C |
| Exact Mass | 324.117310 |
| PSA | 55.76000 |
| LogP | 1.30 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.589 |
Frequently Asked Questions
What is the CAS number of (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one?
The CAS number of (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one is 209861-01-8.
What are the molecular formula and molecular weight of (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one?
(3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one has molecular formula C17H18F2O4 and molecular weight 324.319 g/mol.
What are the upstream and downstream products of (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one?
For (3aR,4R,5R,6aS)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one, 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)-4-((E)-3,3-Difluoro-4-phenoxybut-1-en-1-yl)-5-hydroxyhexahydro-2H-cyclopenta[b]furan-2-one (CAS 209861-01-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1458228-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.