Description

3-Chloro-4-(Methoxycarbonyl)Benzoic Acid is a high-purity, multi-functional benzoic acid derivative that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both a carboxylic acid and a methyl ester group on a chlorinated aromatic ring, makes it an exceptionally versatile intermediate for constructing complex molecules. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a substituted benzoic acid scaffold.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the chlorinated aromatic system provides biological activity.
• Liquid Crystal & OLED Material Production: Serves as a starting material for synthesizing advanced electronic chemicals and functional dyes.
• Polymer Modification: Employed to introduce carboxylic acid functionality into polymers for improved adhesion, cross-linking, or solubility properties.
• Organic Synthesis Building Block: Versatile reagent for Suzuki coupling, esterification, and amidation reactions in custom synthesis and R&D laboratories.
• Chemical Research & Development: A valuable standard and intermediate for method development and exploring new synthetic pathways in academic and industrial settings.

Basic Information

Product Name	3-Chloro-4-(Methoxycarbonyl)Benzoic Acid
CAS No.	55737-77-4
Molecular Formula	C9H7ClO4
Molecular Weight	214.60 g/mol
Synonyms	3-Chloro-4-(methoxycarbonyl)benzoic acid; 4-Carboxy-2-chlorobenzoic acid methyl ester; Methyl 3-chloro-4-carboxybenzoate; 2-Chloro-4-(methoxycarbonyl)benzoic acid; Benzoic acid, 3-chloro-4-(methoxycarbonyl)-; 3-Chloro-4-methoxycarbonylbenzoic acid; Methyl 2-chloroterephthalate (common name); 2-Chloroterephthalic acid monomethyl ester
EINECS	Contact for details

Quality Control

Every batch of 3-Chloro-4-(Methoxycarbonyl)Benzoic 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 Certificate of Analysis (COA) detailing purity, identity, and impurity profiles by HPLC, NMR, and IR is supplied with each shipment to guarantee consistent quality and traceability for your regulatory filings and process validation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The container should be kept tightly closed to prevent moisture absorption and contamination.

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%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
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.