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(5-(trimethylsilyl)thiophen-2-yl)boronic acid

5-三甲基甲硅烷基噻吩-2-硼酸

Also known as: 5-Trimethylsilylthiophene-2-boronic acid, 5-trimethylsilyl-2-thienylboronic acid, 5-TRIMETHYLSILYLTHIOPHENE-2-BORONIC ACID, 5TriMethylsilyl-2-thiopheneboronic acid, Boronic acid, B-[5-(trimethylsilyl)-2-thienyl]-, (5-(TriMethylsilyl)thiophen-2-yl)boronic acid

(5-(trimethylsilyl)thiophen-2-yl)boronic acid (CAS 138983-68-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H13BO2SSi and a molecular weight of 200.13800 g/mol. It is also known as 5-Trimethylsilylthiophene-2-boronic acid, 5-trimethylsilyl-2-thienylboronic acid and 5-TRIMETHYLSILYLTHIOPHENE-2-BORONIC ACID. Key properties include a boiling point of 298.9ºC at 760mmHg, a density of 1.1g/cm3 and a flash point of 134.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
138983-68-3
Jingsj CID
J-1505103-5
Molecular Formula
C7H13BO2SSi
Chinese Name
5-三甲基甲硅烷基噻吩-2-硼酸
Molecular Weight
200.13800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point298.9ºC at 760mmHg
Density1.1g/cm3
Flash Point134.6ºC

Frequently Asked Questions

What is the CAS number of (5-(trimethylsilyl)thiophen-2-yl)boronic acid?

The CAS number of (5-(trimethylsilyl)thiophen-2-yl)boronic acid is 138983-68-3.

What are the molecular formula and molecular weight of (5-(trimethylsilyl)thiophen-2-yl)boronic acid?

(5-(trimethylsilyl)thiophen-2-yl)boronic acid has molecular formula C7H13BO2SSi and molecular weight 200.13800 g/mol.

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

Last updated:

How to cite: Jingsj. "(5-(trimethylsilyl)thiophen-2-yl)boronic acid (CAS 138983-68-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505103-5 (accessed 2026-10-25).

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