(1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one
(1R,5S)-3-氧杂二环[3.3.0]辛-6-烯-2-酮
Also known as: (1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one, (3aS,6aR)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-2-one, (3aS,6aR)-(-)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-2-one, 1H-Cyclopenta[c]furan-2-one, 3,3a,6,6a-tetrahydro-, (3aS,6aR)-
(1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one (CAS 128946-78-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H8O2 and a molecular weight of 124.13700 g/mol. It is also known as (3aS,6aR)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-2-one, (3aS,6aR)-(-)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-2-one and 1H-Cyclopenta[c]furan-2-one, 3,3a,6,6a-tetrahydro-, (3aS,6aR)-. Key properties include a boiling point of 263.139ºC at 760 mmHg, a density of 1.196g/cm3 and a flash point of 104.019ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 128946-78-1
- Jingsj CID
- J-1603326-1
- Molecular Formula
- C7H8O2
- Chinese Name
- (1R,5S)-3-氧杂二环[3.3.0]辛-6-烯-2-酮
- Molecular Weight
- 124.13700 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 263.139ºC at 760 mmHg |
|---|---|
| Density | 1.196g/cm3 |
| Flash Point | 104.019ºC |
Frequently Asked Questions
What is the CAS number of (1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one?
The CAS number of (1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one is 128946-78-1.
What are the molecular formula and molecular weight of (1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one?
(1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one has molecular formula C7H8O2 and molecular weight 124.13700 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(1R,5S)-3-Oxabicyclo[3.3.0]oct-6-en-2-one (CAS 128946-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1603326-1 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.