3,5-Dibromo-2H-pyran-2-one
3,5-二溴-2H-吡喃-2-酮
Also known as: 3,5-dibromo-α-pyrone, 2,5-dibromo-2-pyrone, 2H-Pyran-2-one, 3,5-dibromo-, 3,5-dibromo-2-pyrone, 3,5-dibromopyran-2-one
3,5-Dibromo-2H-pyran-2-one (CAS 19978-41-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H2Br2O2 and a molecular weight of 253.87600 g/mol. It is also known as 3,5-dibromo-α-pyrone, 2,5-dibromo-2-pyrone and 2H-Pyran-2-one, 3,5-dibromo-. Key properties include a boiling point of 230.2ºC at 760 mmHg, a density of 2.411g/cm3 and a flash point of 93ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19978-41-7
- Jingsj CID
- J-1521242-7
- Molecular Formula
- C5H2Br2O2
- Chinese Name
- 3,5-二溴-2H-吡喃-2-酮
- Molecular Weight
- 253.87600 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 230.2ºC at 760 mmHg |
|---|---|
| Density | 2.411g/cm3 |
| Flash Point | 93ºC |
Frequently Asked Questions
What is the CAS number of 3,5-Dibromo-2H-pyran-2-one?
The CAS number of 3,5-Dibromo-2H-pyran-2-one is 19978-41-7.
What are the molecular formula and molecular weight of 3,5-Dibromo-2H-pyran-2-one?
3,5-Dibromo-2H-pyran-2-one has molecular formula C5H2Br2O2 and molecular weight 253.87600 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,5-Dibromo-2H-pyran-2-one (CAS 19978-41-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1521242-7 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.