4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid

4-羟基噻吩并[2,3-b]吡啶-5-羧酸

Also known as: 4-HYDROXYTHIENO[2,3-B]PYRIDINE-5-CARBOXYLIC ACID, 4-oxo-7H-thieno[2,3-b]pyridine-5-carboxylic acid, Thieno[2,3-b]pyridine-5-carboxylic acid, 4-hydroxy-

4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid (CAS 55503-32-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H5NO3S and a molecular weight of 195.19500 g/mol. It is also known as 4-HYDROXYTHIENO[2,3-B]PYRIDINE-5-CARBOXYLIC ACID, 4-oxo-7H-thieno[2,3-b]pyridine-5-carboxylic acid and Thieno[2,3-b]pyridine-5-carboxylic acid, 4-hydroxy-. Key properties include a boiling point of 435.699ºC at 760 mmHg, a density of 1.665g/cm3 and a flash point of 217.303ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
55503-32-7
Jingsj CID
J-870071-3
Molecular Formula
C8H5NO3S
Chinese Name
4-羟基噻吩并[2,3-b]吡啶-5-羧酸
Molecular Weight
195.19500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point435.699ºC at 760 mmHg
Density1.665g/cm3
Flash Point217.303ºC

Frequently Asked Questions

What is the CAS number of 4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid?

The CAS number of 4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid is 55503-32-7.

What are the molecular formula and molecular weight of 4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid?

4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid has molecular formula C8H5NO3S and molecular weight 195.19500 g/mol.

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

Last updated:

How to cite: Jingsj. "4-hydroxythieno[2,3-b]pyridine-5-carboxylic acid (CAS 55503-32-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-870071-3 (accessed 2026-10-24).

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