Description

Benzo[D]Isothiazole-5-Carboxylic Acid is a high-value heterocyclic carboxylic acid building block essential for advanced organic synthesis. This compound matters as a critical intermediate for constructing complex molecules with potential biological activity, offering chemists a versatile handle for further derivatization. It is primarily needed by research and development teams in the pharmaceutical and agrochemical industries for the creation of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly those targeting neurological or inflammatory pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or insecticides, leveraging the bioactivity of the benzisothiazole core.
• Ligand Synthesis: Acts as a starting material for creating specialized ligands used in catalysis or metal-organic frameworks (MOFs).
• Material Science: Employed in the research of organic electronic materials or polymers due to its conjugated structure.
• Chemical Biology: Utilized as a probe or linker molecule in bioconjugation and proteomics research.
• Academic & Contract Research: A valuable reagent for universities and CROs exploring new synthetic methodologies and heterocyclic chemistry.

Basic Information

Product Name	Benzo[D]Isothiazole-5-Carboxylic Acid
CAS No.	1197944-17-4
Molecular Formula	C8H5NO2S
Molecular Weight	179.20 g/mol
Synonyms	1,2-Benzisothiazole-5-carboxylic acid; 5-Carboxy-1,2-benzisothiazole; 1,2-Benzisothiazol-5-ylcarboxylic acid; Benzo[d]isothiazole-5-carboxylic acid; 5-Benzisothiazolecarboxylic acid; 1197944-17-4 (CAS); 5-(1,2-Benzisothiazolyl)carboxylic acid
EINECS	Contact for details

Quality Control

Our Benzo[D]Isothiazole-5-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.