Description

Isothiazole-4,5-Dicarboxylic Acid CAS NO 66882-70-0 is a versatile heterocyclic dicarboxylic acid building block, prized for its bifunctional reactivity and rigid molecular scaffold. This compound is essential for the synthesis of complex molecules in advanced research and industrial chemistry. It is primarily sought after by pharmaceutical researchers, agrochemical developers, and material scientists for creating novel active ingredients, ligands, and functional polymers.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting neurological and anti-infective pathways.
• Agrochemical Synthesis: Used to construct active ingredients for modern crop protection agents, including fungicides and herbicides.
• Ligand and Chelator Development: Serves as a core structure for creating polydentate ligands in catalysis and metal-organic frameworks (MOFs).
• Polymer and Material Science: Incorporated as a monomer or cross-linking agent to produce high-performance polymers with specific thermal or mechanical properties.
• Organic Synthesis Building Block: Utilized in academic and industrial R&D for constructing complex heterocyclic systems and fine chemicals.
• Dye and Pigment Intermediate: Acts as a starting material for synthesizing specialized colorants and functional dyes.

Basic Information

Product Name	Isothiazole-4,5-Dicarboxylic Acid
CAS No.	66882-70-0
Molecular Formula	C5H3NO4S
Molecular Weight	173.15 g/mol
Synonyms	4,5-Isothiazoledicarboxylic Acid; 1,2-Thiazole-4,5-dicarboxylic Acid; 4,5-Dicarboxyisothiazole; Isothiazole-4,5-dicarboxylic acid; 66882-70-0; 4,5-Isothiazoledicarboxylic acid; 4,5-Dicarboxy-1,2-thiazole
EINECS	Contact for details

Quality Control

Our Isothiazole-4,5-Dicarboxylic 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 research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%

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