(5-oxocyclopent-1-en-1-yl)boronic acid
5-氧代环戊-1-烯-1-基硼酸
Also known as: 2-Borono-2-cyclopentenone, 2-cyclopentenone-2-boronic acid, 5-Oxocyclopent-1-ene-1-boronic acid, 5-Oxocyclopenten-1-ylboronic acid, 5-Oxocyclopentene-1-boronic acid, OR9353
(5-oxocyclopent-1-en-1-yl)boronic acid (CAS 871329-71-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H7BO3 and a molecular weight of 125.91800 g/mol. It is also known as 2-Borono-2-cyclopentenone, 2-cyclopentenone-2-boronic acid and 5-Oxocyclopent-1-ene-1-boronic acid. Key properties include a melting point of 143-145ºC, a boiling point of 348ºC at 760 mmHg, a density of 1.25g/cm3 and a flash point of 164.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 871329-71-4
- Jingsj CID
- J-1429082-6
- Molecular Formula
- C5H7BO3
- Chinese Name
- 5-氧代环戊-1-烯-1-基硼酸
- Molecular Weight
- 125.91800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 143-145ºC |
|---|---|
| Boiling Point | 348ºC at 760 mmHg |
| Density | 1.25g/cm3 |
| Flash Point | 164.2ºC |
Frequently Asked Questions
What is the CAS number of (5-oxocyclopent-1-en-1-yl)boronic acid?
The CAS number of (5-oxocyclopent-1-en-1-yl)boronic acid is 871329-71-4.
What are the molecular formula and molecular weight of (5-oxocyclopent-1-en-1-yl)boronic acid?
(5-oxocyclopent-1-en-1-yl)boronic acid has molecular formula C5H7BO3 and molecular weight 125.91800 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(5-oxocyclopent-1-en-1-yl)boronic acid (CAS 871329-71-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1429082-6 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.