1,2-benzisothiazole-3-carboxylic acid
1,2-苯并异噻唑-3-羧酸
Also known as: 1,2-benzothiazole-3-carboxylic acid, 3-carboxy-1,2-benzisothiazole, benzo[d]isothiazole-3-carboxylic acid, acido 3-benzisotiazolcarbossilic, acido 1,2-benzisotiazol-3-ilcarbossilico, benzisothiazole-3-carboxylic acid
1,2-benzisothiazole-3-carboxylic acid (CAS 40991-34-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H5NO2S and a molecular weight of 179.19600 g/mol. It is also known as 1,2-benzothiazole-3-carboxylic acid, 3-carboxy-1,2-benzisothiazole and benzo[d]isothiazole-3-carboxylic acid. Key properties include a boiling point of 279.7ºC at 760 mmHg, a density of 1.508g/cm3 and a flash point of 122.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 40991-34-2
- Jingsj CID
- J-1146294-7
- Molecular Formula
- C8H5NO2S
- Chinese Name
- 1,2-苯并异噻唑-3-羧酸
- Molecular Weight
- 179.19600 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 279.7ºC at 760 mmHg |
|---|---|
| Density | 1.508g/cm3 |
| Flash Point | 122.9ºC |
Frequently Asked Questions
What is the CAS number of 1,2-benzisothiazole-3-carboxylic acid?
The CAS number of 1,2-benzisothiazole-3-carboxylic acid is 40991-34-2.
What are the molecular formula and molecular weight of 1,2-benzisothiazole-3-carboxylic acid?
1,2-benzisothiazole-3-carboxylic acid has molecular formula C8H5NO2S and molecular weight 179.19600 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2-benzisothiazole-3-carboxylic acid (CAS 40991-34-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1146294-7 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.