2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

5-氯-1-戊炔基-1-硼酸频那醇酯

Also known as: 2-(5-Chloropent-1-ynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-(5-Chloropent-1-ynyl)boronic acid pinacol ester, 5-Chloro-1-pentynyl-1-boronic acid pinacol ester, 5-Chloropent-1-ynylboronic acid pinacol ester, 1,3,2-Dioxaborolane, 2-(5-chloro-1-pentyn-1-yl)-4,4,5,5-tetramethyl-

2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 159087-42-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H18BClO2 and a molecular weight of 228.52300 g/mol. It is also known as 2-(5-Chloropent-1-ynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-(5-Chloropent-1-ynyl)boronic acid pinacol ester and 5-Chloro-1-pentynyl-1-boronic acid pinacol ester. Key properties include a density of 1.0422 g/mL at 25ºC and a flash point of 110ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
159087-42-0
Jingsj CID
J-1347891-3
Molecular Formula
C11H18BClO2
Chinese Name
5-氯-1-戊炔基-1-硼酸频那醇酯
Molecular Weight
228.52300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.0422 g/mL at 25ºC
Flash Point110ºC

Frequently Asked Questions

What is the CAS number of 2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

The CAS number of 2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is 159087-42-0.

What are the molecular formula and molecular weight of 2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has molecular formula C11H18BClO2 and molecular weight 228.52300 g/mol.

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

Last updated:

How to cite: Jingsj. "2-(5-Chloropent-1-yn-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 159087-42-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1347891-3 (accessed 2026-10-25).

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