Cyclopenten-1-ylboronic acid

环戊烯-1-基硼酸

Also known as: 1-Cyclopentenylboronic acid, 1-Cyclopenten-1-ylboronic acid, Cyclopent-1-en-1-ylboronic acid, Cyclopent-1-ene-1-boronic acid, Cyclopentene-1-boronic acid, Boronic acid, B-1-cyclopenten-1-yl-, CYCLOPENTEN-1-YLBORONIC ACID, cyclopenten-1-ylboronic acid, cyclopentenylboronic acid, 1-Cyclopentenylboronic acid (contains varying amounts of Anhydride)

Cyclopenten-1-ylboronic acid (CAS 850036-28-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H9BO2 and a molecular weight of 111.935 g/mol. It is also known as 1-Cyclopentenylboronic acid, 1-Cyclopenten-1-ylboronic acid and Cyclopent-1-en-1-ylboronic acid. Key properties include a melting point of 134-140ºC, a boiling point of 246.7±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 103.0±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
850036-28-1
Jingsj CID
J-1955193-3
Molecular Formula
C5H9BO2
Chinese Name
环戊烯-1-基硼酸
Molecular Weight
111.935 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point134-140ºC
Boiling Point246.7±33.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point103.0±25.4 °C

Frequently Asked Questions

What is the CAS number of Cyclopenten-1-ylboronic acid?

The CAS number of Cyclopenten-1-ylboronic acid is 850036-28-1.

What are the molecular formula and molecular weight of Cyclopenten-1-ylboronic acid?

Cyclopenten-1-ylboronic acid has molecular formula C5H9BO2 and molecular weight 111.935 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Cyclopenten-1-ylboronic acid (CAS 850036-28-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1955193-3 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.