Description

Benzenesulfonic Acid, p-Chloro-, 2-Chloro-3-Nitrophenyl Ester is a specialized organic ester compound, primarily utilized as a high-value chemical intermediate in advanced synthesis. Its molecular structure, featuring both sulfonate and nitro-chloro aromatic groups, makes it a critical building block for creating complex molecules with specific functionalities. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or aryl-nitro motifs.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and pesticides, where its aromatic chlorine and nitro groups contribute to biological activity.
• Dye and Pigment Manufacturing: Acts as an intermediate for synthesizing complex azo dyes and organic pigments, providing color fastness and stability.
• Polymer Modification: Employed to introduce sulfonate ester groups into polymer chains, altering solubility, adhesion, or other material properties.
• Liquid Crystal and OLED Material Research: Utilized as a building block in the development of organic electronic materials due to its planar, conjugated structure.
• Cross-coupling Reactions: Functions as a substrate in palladium-catalyzed cross-coupling reactions (e.g., Suzuki, Heck) for constructing biaryl systems in medicinal chemistry.

Basic Information

Item	Details
Product Name	Benzenesulfonic Acid, p-Chloro-, 2-Chloro-3-Nitrophenyl Ester
CAS No.	105945-62-8
Molecular Formula	C12H7Cl2NO5S
Molecular Weight	348.16 g/mol
Synonyms	p-Chlorobenzenesulfonic Acid 2-Chloro-3-nitrophenyl Ester; 2-Chloro-3-nitrophenyl 4-Chlorobenzenesulfonate; 4-Chlorobenzenesulfonic Acid (2-Chloro-3-nitrophenyl) Ester; 1-Chloro-4-({[(2-chloro-3-nitrophenyl)oxy]sulfonyl})benzene; (2-Chloro-3-nitrophenyl) 4-Chlorobenzenesulfonate
EINECS	Contact for details

Quality Control

Every batch of Benzenesulfonic Acid, p-Chloro-, 2-Chloro-3-Nitrophenyl Ester is produced and tested under a strict quality management system. We ensure high purity and batch-to-batch consistency through advanced analytical techniques including HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, open flames, and strong oxidizing agents. The compound may be light-sensitive; prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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