Description

2-Phenyl-1,2-benzisothiazol-3-(2H)-one is a specialized heterocyclic organic compound that serves as a key intermediate in advanced chemical synthesis. Its unique benzisothiazolone core structure makes it valuable for the development of pharmaceuticals, agrochemicals, and performance materials. This product is essential for R&D chemists and production specialists in the fine chemical, pharmaceutical, and specialty polymer industries seeking to create novel molecules with specific biological or material properties.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds targeting neurological and anti-inflammatory pathways.
• Agrochemical Synthesis: Used in the research and development of new-generation fungicides and herbicides, leveraging its heterocyclic activity.
• Polymer Additive Precursor: Acts as a starting material for synthesizing light stabilizers, antioxidants, and other performance-enhancing additives for plastics and coatings.
• Research & Development: Serves as a versatile scaffold in medicinal chemistry for creating compound libraries and exploring new structure-activity relationships (SAR).
• Dye and Pigment Intermediate: Utilized in the production of specialized dyes and organic pigments due to its fused aromatic system.

Basic Information

Product Name	2-Phenyl-1,2-benzisothiazol-3-(2H)-one
CAS No.	2527-03-9
Molecular Formula	C₁₃H₉NOS
Molecular Weight	227.28 g/mol
Synonyms	2-Phenyl-1,2-benzisothiazolin-3-one; 2-Phenyl-3H-1,2-benzisothiazol-3-one; 2-Phenylbenzo[d]isothiazol-3(2H)-one; 3H-1,2-Benzisothiazol-3-one, 2-phenyl-; PBIT; Phenylbenzisothiazolone; N-Phenylbenzisothiazolinone; 1,2-Benzisothiazol-3(2H)-one, 2-phenyl-
EINECS	219-767-5

Quality Control

Our production of 2-Phenyl-1,2-benzisothiazol-3-(2H)-one adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is characterized and tested against established in-house specifications, which typically include identity confirmation, assay (purity), and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with each 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 room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	156 - 160 °C
Loss on Drying	≤ 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.