Description

3-Methyl-2-Oxoindoline-5-Sulfonyl Chloride is a high-purity, reactive sulfonyl chloride derivative used as a critical building block in advanced organic synthesis. This compound is valued for its role in introducing the sulfonamide functional group, enabling the creation of molecules with tailored biological and physical properties. It is primarily sought by research and development teams in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and complex intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of potential drug candidates, particularly those targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides by acting as a sulfonating agent.
• Dye and Pigment Synthesis: Serves as an intermediate for creating specialized sulfonated dyes and functional pigments.
• Material Science: Employed in the production of specialty polymers and advanced materials where sulfonamide linkages are required.
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying enzyme activity and protein interactions.

Basic Information

Product Name	3-Methyl-2-Oxoindoline-5-Sulfonyl Chloride
CAS No.	854137-61-4
Molecular Formula	C9H8ClNO3S
Molecular Weight	245.68 g/mol
Synonyms	5-(Chlorosulfonyl)-3-methyl-1,3-dihydro-2H-indol-2-one; 3-Methylisatin-5-sulfonyl chloride; 3-Methyl-2-oxo-2,3-dihydro-1H-indole-5-sulfonyl chloride; 3-Methyl-2,3-dihydro-2-oxoindole-5-sulfonyl chloride; 1,3-Dihydro-3-methyl-2-oxo-5-indolesulfonyl chloride; Isatin-5-sulfonyl chloride, 3-methyl-; 854137-61-4
EINECS	Contact for details

Quality Control

Our 3-Methyl-2-Oxoindoline-5-Sulfonyl Chloride is manufactured under strict quality management systems. Each batch is analyzed to ensure high chemical purity and consistency, with testing typically including identification (IR, NMR), assay (HPLC), and control of key impurities. Certificates of Analysis (COA) documenting all test results 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 place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 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.