Description

4-Ethoxy-Benzenesulfonyl Chloride is a versatile and high-value sulfonyl chloride derivative, primarily used as a key synthetic intermediate in advanced organic synthesis. Its core value proposition lies in its reactivity as an electrophile, enabling the efficient introduction of the 4-ethoxybenzenesulfonyl moiety to construct more complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it serves as a critical building block for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of sulfonamide-based drug candidates, including potential enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of novel herbicides, fungicides, and insecticides that incorporate sulfonyl functional groups for enhanced activity.
• Dyestuff and Pigment Manufacturing: Serves as a precursor for synthesizing sulfonated dyes and pigments, improving solubility and color fastness.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for subsequent cross-linking or to impart specific chemical functionalities.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and creating specialized chemical libraries.
• Liquid Crystal and Electronic Material Precursor: Used in the synthesis of advanced materials requiring specific aromatic sulfonyl structures.

Basic Information

Product Name	4-Ethoxy-Benzenesulfonyl Chloride
CAS No.	1132-17-8
Molecular Formula	C8H9ClO3S
Molecular Weight	220.67 g/mol
Synonyms	p-Ethoxybenzenesulfonyl chloride; 4-Ethoxybenzene-1-sulfonyl chloride; 1-Ethoxy-4-sulfonylchloridobenzene; Benzenesulfonyl chloride, 4-ethoxy-; 4-Ethoxyphenylsulfonyl chloride
EINECS	214-488-9

Quality Control

Our 4-Ethoxy-Benzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity assessment and NMR/IR for structural confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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). This product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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