Description

4-Hydroxy-1H-1,2-benzisothiazole-1,1,3(2H)-trione is a specialized heterocyclic compound with the CAS number 80563-77-5, serving as a key synthetic intermediate and functional additive. Its unique benzisothiazole trione structure provides valuable chemical reactivity, making it essential for advanced material synthesis and fine chemical manufacturing. This product is primarily sought by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and polymer sectors for developing novel active ingredients and performance materials.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of novel drug candidates, particularly those targeting specific enzyme pathways.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a functional monomer or cross-linking agent to impart specific thermal or chemical resistance properties to specialty polymers.
• Dye and Pigment Manufacturing: Serves as a precursor for creating complex colorants with enhanced lightfastness and stability.
• Research & Development: Employed in academic and industrial R&D labs for exploring new organic reactions and material properties.
• Chemical Synthesis: A versatile reagent for constructing complex heterocyclic frameworks in multi-step synthetic routes.

Basic Information

Product Name	4-Hydroxy-1H-1,2-benzisothiazole-1,1,3(2H)-trione
CAS No.	80563-77-5
Molecular Formula	C7H3NO4S
Molecular Weight	197.17 g/mol
Synonyms	1,1,3-Trioxo-1,2-benzisothiazol-4-ol; 4-Hydroxybenzisothiazole-1,1,3-trione; 4-Hydroxy-1,2-benzisothiazoline-1,1,3-trione; 1,2-Benzisothiazol-4-ol, 1,1,3-trioxide; 4-Hydroxy-1,2-benzisothiazole-1,1,3-trione; 4-Hydroxy-1,1,3-trioxo-1,2-benzisothiazole; 4-Hydroxy-2,1-benzisothiazole-1,1,3-trione
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-1H-1,2-benzisothiazole-1,1,3(2H)-trione adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material is subjected to comprehensive analytical testing, including HPLC for assay and related substances, IR for identification, and loss on drying. Certificates of Analysis (COA) documenting all critical quality attributes are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Residue on Ignition	≤ 0.1%

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