cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione
顺-1,5-二甲基二环[3.3.0]辛烷-3,7-二酮
Also known as: rel-(3aR,6aR)-3a,6a-Dimethyloctahydropentalene-2,5-dione, cis-3a,6a-Dimethyltetrahydropentalene-2,5(1H,3H)-dione, (3aβ,6aβ)-3a,6a-Dimethyloctahydropentalene-2,5-dione, 3a,4,6,6a-Tetrahydro-3aα,6aα-dimethyl-2,5(1H,3H)-pentalenedione, 3a,6a-Dimethylperhydropentalene-2,5-dione, 1β,5β-Dimethylbicyclo[3.3.0]octane-3,7-dione, cis-tetrahydro-3a,6a-dimethylpentalene-2,5(1H,3H)-dione, MFCD00003772, EINECS 244-255-8
cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione (CAS 21170-10-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H14O2 and a molecular weight of 166.21700 g/mol. It is also known as rel-(3aR,6aR)-3a,6a-Dimethyloctahydropentalene-2,5-dione, cis-3a,6a-Dimethyltetrahydropentalene-2,5(1H,3H)-dione and (3aβ,6aβ)-3a,6a-Dimethyloctahydropentalene-2,5-dione. Key properties include a melting point of 228-230ºC(lit.), a boiling point of 257.5ºC at 760 mmHg, a density of 1.142g/cm3 and a flash point of 95ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21170-10-5
- Jingsj CID
- J-12767-3
- Molecular Formula
- C10H14O2
- Chinese Name
- 顺-1,5-二甲基二环[3.3.0]辛烷-3,7-二酮
- Molecular Weight
- 166.21700 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 228-230ºC(lit.) |
|---|---|
| Boiling Point | 257.5ºC at 760 mmHg |
| Density | 1.142g/cm3 |
| Flash Point | 95ºC |
Frequently Asked Questions
What is the CAS number of cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione?
The CAS number of cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione is 21170-10-5.
What are the molecular formula and molecular weight of cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione?
cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione has molecular formula C10H14O2 and molecular weight 166.21700 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "cis-1,5-Dimethylbicyclo[3.3.0]octane-3,7-dione (CAS 21170-10-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12767-3 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.