Description

4,5-Dichloroisothiazole-3-Carboxylic Acid is a high-value halogenated heterocyclic building block with significant synthetic utility. This compound is essential for the development of novel active ingredients, particularly in the agrochemical and pharmaceutical sectors, where its unique isothiazole core serves as a key pharmacophore. It is primarily sought by R&D chemists and process development teams for the synthesis of advanced fungicides, herbicides, and bioactive molecules. The product, CAS NO 131947-13-2, is supplied to meet the stringent purity demands of modern organic synthesis and scale-up processes.

Application

• Agrochemical Intermediate: A critical precursor in the synthesis of next-generation fungicides and herbicides, leveraging the bioactivity of the dichloroisothiazole moiety.
• Pharmaceutical Building Block: Used in medicinal chemistry for constructing novel drug candidates, particularly those targeting infectious diseases or with anti-inflammatory properties.
• Material Science Research: Serves as a monomer or functionalizing agent in the development of specialty polymers and advanced organic materials.
• Chemical Synthesis Reagent: Employed in academic and industrial laboratories for the preparation of complex heterocyclic compounds and fine chemicals.
• Crop Protection Product Development: Integral to creating proprietary active ingredients with improved efficacy and environmental profiles.

Basic Information

Product Name	4,5-Dichloroisothiazole-3-Carboxylic Acid
CAS No.	131947-13-2
Molecular Formula	C4HCl2NO2S
Molecular Weight	198.02 g/mol
Synonyms	3-Carboxy-4,5-dichloroisothiazole; 4,5-Dichloro-1,2-thiazole-3-carboxylic acid; 4,5-Dichloro-3-isothiazolecarboxylic acid; 4,5-Dichloroisothiazole-3-carboxylate; DCITCA; 131947-13-2; 4,5-Dichloro-δ2-isothiazoline-3-carboxylic acid
EINECS	Contact for details

Quality Control

Our 4,5-Dichloroisothiazole-3-Carboxylic Acid is manufactured under strict quality management systems. Each 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 advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment. We support compliance with global regulatory frameworks, and custom purity grades (e.g., >98%, >99%) are available to meet specific project requirements.

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). The compound may be moisture-sensitive; keep the container tightly sealed under an inert atmosphere if specified for high-purity grades. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (HPLC, Area %)	≥ 99.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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