Description

3-Pyridinesulfonylchloride,5,6-Dichloro-(9Ci) is a high-purity, multi-functional heterocyclic building block essential for advanced organic synthesis. This compound is valued for its role as a key sulfonylation reagent, enabling the introduction of the sulfonyl chloride moiety into complex molecular architectures. It is primarily utilized by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the creation of novel active ingredients and intermediates.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides where the sulfonyl group confers specific biological activity.
• Material Science Research: Serves as a building block for creating functionalized polymers, ligands for catalysis, and advanced organic materials.
• Chemical Biology & Proteomics: Employed as a reactive handle for bioconjugation and the development of activity-based probes.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs for the production of bespoke intermediates under cGMP or research-grade conditions.

Basic Information

Product Name	3-Pyridinesulfonylchloride,5,6-Dichloro-(9Ci)
CAS No.	98121-40-5
Molecular Formula	C5H2Cl3NO2S
Molecular Weight	246.50 g/mol
Synonyms	5,6-Dichloropyridine-3-sulfonyl chloride; 3-Pyridinesulfonyl chloride, 5,6-dichloro-; 5,6-Dichloro-3-pyridinesulfonyl chloride; 5,6-Dichloropyridine-3-sulphonyl chloride; 5,6-Dichloro-3-sulfonylchloropyridine
EINECS	Contact for details

Quality Control

Our 3-Pyridinesulfonylchloride,5,6-Dichloro-(9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including HPLC purity, identity confirmation (IR, NMR), and impurity profiling. A Certificate of Analysis (COA) is supplied with each batch, and custom specifications for research or cGMP applications can be supported upon request.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white 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.