(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one
(1S,5R)-2-氧杂二环[3.3.0]辛-6-烯-3-酮
Also known as: (3aR,6aS)-3,3a,6,6a-Tetrahydro-2H-cyclopenta[b]furan-2-one, (1S,5R)-(-)-2-Oxabicyclo[3.3.0]oct-6-en-3-one, (-)-cis-2-Oxabicyclo[3.3.0]oct-6-en-3-one, MFCD00010402
(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one (CAS 43119-28-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H8O2 and a molecular weight of 124.137 g/mol. It is also known as (3aR,6aS)-3,3a,6,6a-Tetrahydro-2H-cyclopenta[b]furan-2-one, (1S,5R)-(-)-2-Oxabicyclo[3.3.0]oct-6-en-3-one and (-)-cis-2-Oxabicyclo[3.3.0]oct-6-en-3-one. Key properties include a melting point of 44-46ºC(lit.), a boiling point of 263.1±39.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 104.0±24.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 43119-28-4
- Jingsj CID
- J-1991375-5
- Molecular Formula
- C7H8O2
- Chinese Name
- (1S,5R)-2-氧杂二环[3.3.0]辛-6-烯-3-酮
- Molecular Weight
- 124.137 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 44-46ºC(lit.) |
|---|---|
| Boiling Point | 263.1±39.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 104.0±24.5 °C |
Frequently Asked Questions
What is the CAS number of (1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one?
The CAS number of (1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one is 43119-28-4.
What are the molecular formula and molecular weight of (1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one?
(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one has molecular formula C7H8O2 and molecular weight 124.137 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one (CAS 43119-28-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991375-5 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.