Description

Benzenesulfonyl Chloride, 5-Acetyl-2-Methoxy- (9Ci) is a specialized aromatic sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its dual functional groups, which enable it to act as a versatile electrophile for introducing the sulfonyl moiety and as a precursor for further functionalization. This compound is essential for research chemists and process development scientists in the pharmaceutical and agrochemical industries, where it is used to create novel active ingredients and complex intermediates. Its specific substitution pattern makes it particularly valuable for synthesizing compounds with targeted biological activity.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in the development of enzyme inhibitors and receptor modulators.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and pesticides that require specific sulfonamide or sulfonate functionalities.
• Dye and Pigment Manufacturing: Serves as a precursor for synthesizing specialized sulfonated dyes and colorants with enhanced properties.
• Polymer Science: Employed in the creation of functional monomers and cross-linking agents for specialty polymers.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating complex molecular architectures.
• Ligand and Catalyst Preparation: Used to synthesize tailored ligands for metal complexes and organocatalysts.

Basic Information

Item	Detail
Product Name	Benzenesulfonyl Chloride, 5-Acetyl-2-Methoxy- (9Ci)
CAS No.	85276-41-1
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	5-Acetyl-2-methoxybenzenesulfonyl chloride; 1-(4-Methoxy-3-sulfonylchloridophenyl)ethanone; 2-Methoxy-5-acetylbenzenesulfonyl chloride; 4'-Methoxy-3'-acetylbenzenesulfonyl chloride; 3-Acetyl-6-methoxybenzenesulfonyl chloride; 5-Acetyl-2-methoxybenzene-1-sulfonyl chloride
EINECS	Contact for details

Quality Control

Our Benzenesulfonyl Chloride, 5-Acetyl-2-Methoxy- (9Ci) is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and process chemistry. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We are committed to consistent quality and supply reliability for our global B2B partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); therefore, containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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