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2-Boronothiophene-3-carboxylic acid

2-二羟基硼基-3-噻吩羧酸

Also known as: 3-Carboxythiophene-2-boronic acid, 2-(Dihydroxyboryl)-3-thiophenecarboxylic acid, 2-(dihydroxyboranyl)thiophene-3-carboxylic acid, 3-Thiophenecarboxylic acid, 2-borono-, 2-(Dihydroxyboryl)-3-thiophenecarboxylic acid, Tech.

2-Boronothiophene-3-carboxylic acid (CAS 519054-53-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5BO4S and a molecular weight of 171.96700 g/mol. It is also known as 3-Carboxythiophene-2-boronic acid, 2-(Dihydroxyboryl)-3-thiophenecarboxylic acid and 2-(dihydroxyboranyl)thiophene-3-carboxylic acid. Key properties include a melting point of 146ºC, a boiling point of 442.4ºC at 760 mmHg, a density of 1.59g/cm3 and a flash point of 221.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
519054-53-6
Jingsj CID
J-1516595-2
Molecular Formula
C5H5BO4S
Chinese Name
2-二羟基硼基-3-噻吩羧酸
Molecular Weight
171.96700 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point146ºC
Boiling Point442.4ºC at 760 mmHg
Density1.59g/cm3
Flash Point221.3ºC

Frequently Asked Questions

What is the CAS number of 2-Boronothiophene-3-carboxylic acid?

The CAS number of 2-Boronothiophene-3-carboxylic acid is 519054-53-6.

What are the molecular formula and molecular weight of 2-Boronothiophene-3-carboxylic acid?

2-Boronothiophene-3-carboxylic acid has molecular formula C5H5BO4S and molecular weight 171.96700 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Boronothiophene-3-carboxylic acid (CAS 519054-53-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516595-2 (accessed 2026-10-24).

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