2-Thiopheneboronic acid

2-噻吩硼酸

Also known as: Thiophene-2-boronic acid, 2-Thienylboronic acid, Thiophen-2-ylboronic acid, Thienylboronic acid, Boronic acid, B-2-thienyl-

2-Thiopheneboronic acid (CAS 6165-68-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5BO2S and a molecular weight of 127.957 g/mol. It is also known as Thiophene-2-boronic acid, 2-Thienylboronic acid and Thiophen-2-ylboronic acid. Key properties include a melting point of 138-140 °C(lit.), a boiling point of 287.9±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 127.9±25.1 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6165-68-0
Jingsj CID
J-48800-0
Molecular Formula
C4H5BO2S
Chinese Name
2-噻吩硼酸
Molecular Weight
127.957 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point138-140 °C(lit.)
Boiling Point287.9±32.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point127.9±25.1 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-Thiopheneboronic acid?

The CAS number of 2-Thiopheneboronic acid is 6165-68-0.

What are the molecular formula and molecular weight of 2-Thiopheneboronic acid?

2-Thiopheneboronic acid has molecular formula C4H5BO2S and molecular weight 127.957 g/mol.

Is 2-Thiopheneboronic acid hazardous?

2-Thiopheneboronic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "2-Thiopheneboronic acid (CAS 6165-68-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48800-0 (accessed 2026-10-22).

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