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5-Methoxybenzo[d]isothiazole-3-carboxylic acid

5-甲氧基-1,2-苯并异噻唑-3-羧酸

Also known as: 5-Methoxy-1,2-benzisothiazole-3-carboxylic acid, 5-Methoxy-1,2-benzothiazole-3-carboxylic acid, 5-Methoxybenzo[d]isothiazole-3-carboxylic acid, 1,2-Benzisothiazole-3-carboxylic acid, 5-methoxy-

5-Methoxybenzo[d]isothiazole-3-carboxylic acid (CAS 677304-76-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO3S and a molecular weight of 209.22200 g/mol. It is also known as 5-Methoxy-1,2-benzisothiazole-3-carboxylic acid, 5-Methoxy-1,2-benzothiazole-3-carboxylic acid and 1,2-Benzisothiazole-3-carboxylic acid, 5-methoxy-. Key properties include a boiling point of 321.9ºC at 760 mmHg and a density of 1.465 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
677304-76-6
Jingsj CID
J-1024562-0
Molecular Formula
C9H7NO3S
Chinese Name
5-甲氧基-1,2-苯并异噻唑-3-羧酸
Molecular Weight
209.22200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point321.9ºC at 760 mmHg
Density1.465 g/cm3

Frequently Asked Questions

What is the CAS number of 5-Methoxybenzo[d]isothiazole-3-carboxylic acid?

The CAS number of 5-Methoxybenzo[d]isothiazole-3-carboxylic acid is 677304-76-6.

What are the molecular formula and molecular weight of 5-Methoxybenzo[d]isothiazole-3-carboxylic acid?

5-Methoxybenzo[d]isothiazole-3-carboxylic acid has molecular formula C9H7NO3S and molecular weight 209.22200 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methoxybenzo[d]isothiazole-3-carboxylic acid (CAS 677304-76-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1024562-0 (accessed 2026-10-23).

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