Description

5-Chlorosulphonyl-2-Anisic Acid is a versatile and high-value aromatic sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its unique structure, featuring both a reactive sulfonyl chloride group and a protected carboxylic acid, makes it indispensable for creating complex molecules with tailored properties. This intermediate is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting metabolic and inflammatory pathways.
• Agrochemical Synthesis: Used in the development of advanced herbicides and fungicides, leveraging its bioactive scaffold.
• Dyestuff and Pigment Manufacturing: Serves as a building block for synthesizing specialized azo dyes and high-performance pigments.
• Polymer Modification: Employed to introduce sulfonamide or sulfonate functional groups into polymers to alter solubility, adhesion, or ionic characteristics.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new reaction pathways and creating custom molecular libraries.
• Liquid Crystal & Electronic Materials: Potential intermediate in the production of specialty chemicals for electronic applications.

Basic Information

Product Name	5-Chlorosulphonyl-2-Anisic Acid
CAS No.	51904-91-7
Molecular Formula	C8H7ClO5S
Molecular Weight	250.66 g/mol
Synonyms	5-(Chlorosulfonyl)-2-methoxybenzoic Acid; 2-Methoxy-5-(chlorosulfonyl)benzoic Acid; 5-Chlorosulfonyl-o-anisic Acid; Benzoic acid, 5-(chlorosulfonyl)-2-methoxy-; 5-Chlorosulfonyl-2-methoxybenzoic Acid
EINECS	Contact for details

Quality Control

Every batch of 5-Chlorosulphonyl-2-Anisic Acid is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure the material meets the precise requirements of your synthesis. A detailed Certificate of Analysis (COA), including purity by HPLC, identity confirmation (IR, NMR), and impurity profile, is supplied with each shipment to guarantee consistency and traceability for your R&D and production needs.

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 and reactivity as a strong acid/organic solvent derivative, the container must be kept tightly sealed under anhydrous conditions and separated from bases, oxidizing agents, and moisture sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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