Description

7-Chloro-2H-1,4-Benzothiazin-3(4H)-One is a high-purity organic chemical building block with the CAS registry number 5333-05-1. This compound is a key heterocyclic intermediate valued for its role in the synthesis of more complex pharmacologically active molecules. It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders.
• Agrochemical Research: Used in the development and production of advanced pesticides and herbicides, leveraging its benzothiazine core structure.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex heterocyclic compounds due to its reactive chloro and carbonyl groups.
• Material Science Research: Investigated as a monomer or additive for creating specialized polymers with unique electronic or photophysical properties.
• Dye & Pigment Intermediate: Acts as a starting material for synthesizing specialized dyes and organic pigments.

Basic Information

Product Name	7-Chloro-2H-1,4-Benzothiazin-3(4H)-One
CAS No.	5333-05-1
Molecular Formula	C8H6ClNOS
Molecular Weight	199.66 g/mol
Synonyms	7-Chloro-3,4-dihydro-2H-1,4-benzothiazin-3-one; 7-Chloro-3,4-dihydro-1,4-benzothiazin-3-one; 7-Chloro-1,4-benzothiazin-3(4H)-one; 3H-1,4-Benzothiazin-3-one, 7-chloro-2,4-dihydro-; 7-Chloro-2H-benzo[b][1,4]thiazin-3(4H)-one; 7-Chloro-3-oxo-3,4-dihydro-2H-1,4-benzothiazine
EINECS	226-246-8

Quality Control

Our 7-Chloro-2H-1,4-Benzothiazin-3(4H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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