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

Also known as: 3-Chlorothiophene-2-boronic acid pinacol ester, 2-(3-Chloro-2-thienyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 1,3,2-Dioxaborolane, 2-(3-chloro-2-thienyl)-4,4,5,5-tetramethyl-

2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1040281-97-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H14BClO2S and a molecular weight of 244.54600 g/mol. Key properties include a boiling point of 318.3ºC at 760 mmHg, a density of 1.18g/cm3 and a flash point of 146.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1040281-97-7
Jingsj CID: J-1315695-1
Molecular Formula: C₁₀H₁₄BClO₂S
Molecular Weight: 244.54600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	318.3ºC at 760 mmHg
Density	1.18g/cm3
Flash Point	146.3ºC
Exact Mass	244.05000
PSA	46.70000
LogP	2.70070
Vapor Pressure	0.000681mmHg at 25°C
Refractive Index	1.516

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

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

The CAS number of 2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is 1040281-97-7.

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

2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has molecular formula C10H14BClO2S and molecular weight 244.54600 g/mol.

What are the upstream and downstream products of 2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

For 2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Upstream Products: 3-Chlorothiophene, Pinacolborane.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-(3-Chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1040281-97-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1315695-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.