Description

Methyl 3-Oxo1,2-Benzisothiazole-2(3H)-Acetate 1,1-Dioxide is a high-purity, specialized organic intermediate characterized by its benzisothiazole dioxide core structure. This compound matters for its role as a critical building block in the synthesis of advanced pharmaceutical agents and agrochemicals, where precise molecular architecture is paramount. It is primarily needed by research and development chemists, process scale-up engineers, and manufacturers in the fine chemical, pharmaceutical, and crop protection industries seeking reliable, high-quality intermediates for complex synthetic routes.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting central nervous system (CNS) disorders or possessing anti-inflammatory properties.
• Agrochemical Synthesis: Serves as a foundational building block for developing new generation herbicides, fungicides, or insecticides with enhanced efficacy and selectivity.
• Fine Chemical Production: Used in custom synthesis and contract manufacturing for producing complex, high-value organic molecules for research and industrial applications.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring new heterocyclic chemistry, reaction methodologies, and material science applications.
• Dye and Pigment Intermediate: Potential use in the synthesis of specialized dyes, pigments, or optical brighteners due to its conjugated system.

Basic Information

Item	Details
Product Name	Methyl 3-Oxo1,2-Benzisothiazole-2(3H)-Acetate 1,1-Dioxide
CAS No.	6639-62-9
Molecular Formula	C10H9NO5S
Molecular Weight	255.25 g/mol
Synonyms	Methyl (1,1-dioxo-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate; 2-(Methoxycarbonylmethyl)-1,2-benzisothiazol-3(2H)-one 1,1-Dioxide; Saccharin derivative; 1,2-Benzisothiazol-3(2H)-one, 2-(carboxymethyl)-, 1,1-dioxide, methyl ester; Methyl saccharinylacetate; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Methyl 3-Oxo1,2-Benzisothiazole-2(3H)-Acetate 1,1-Dioxide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards for use in sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your internal quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). The container should be kept tightly sealed to protect from moisture. Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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