Description

4'-Chlorosulfonyl-Biphenyl-4-Carboxylic Acid Methyl Ester is a high-purity, multi-functional organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in the reactive chlorosulfonyl and ester functional groups, which make it a versatile building block for constructing complex molecular architectures. This compound is primarily needed by R&D and production teams in the pharmaceutical and agrochemical industries for the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those with biphenyl core structures.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Liquid Crystal & OLED Material Precursor: Serves as a critical intermediate for manufacturing specialized organic electronic materials.
• Polymer & Resin Modifier: Employed to introduce sulfonyl chloride groups into polymer chains for enhanced properties.
• Dye & Pigment Manufacturing: Acts as a precursor in the synthesis of complex colorants and functional dyes.
• Cross-coupling Reactions: A valuable substrate in Suzuki, Heck, and other palladium-catalyzed coupling reactions for C-C bond formation.
• Chemical Research & Development: Essential reagent in academic and industrial labs for exploring new synthetic pathways and methodologies.

Basic Information

Product Name	4'-Chlorosulfonyl-Biphenyl-4-Carboxylic Acid Methyl Ester
CAS No.	939761-04-3
Molecular Formula	C14H11ClO4S
Molecular Weight	310.75 g/mol
Synonyms	Methyl 4'-(chlorosulfonyl)biphenyl-4-carboxylate; 4'-(Chlorosulfonyl)[1,1'-biphenyl]-4-carboxylic acid methyl ester; Biphenyl-4-carboxylic acid, 4'-(chlorosulfonyl)-, methyl ester; [1,1'-Biphenyl]-4-carboxylic acid, 4'-(chlorosulfonyl)-, methyl ester; Methyl 4'-(chlorosulfonyl)-[1,1'-biphenyl]-4-carboxylate; 4-Carbomethoxy-4'-chlorosulfonylbiphenyl
EINECS	Contact for details

Quality Control

Our 4'-Chlorosulfonyl-Biphenyl-4-Carboxylic Acid Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent chemical identity. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under dry conditions to prevent decomposition. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.