Description

Methyl 4-Chlorocarbonylbenzoate is a versatile and high-purity chemical intermediate essential for advanced organic synthesis. Its bifunctional structure, featuring both a reactive acid chloride and a methyl ester group, makes it a critical building block for constructing complex molecules. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for the development of active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing a benzoic acid or benzamide core structure.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators requiring specific aromatic carboxylic acid derivatives.
• Liquid Crystal & OLED Material Production: Serves as a building block for creating advanced organic electronic materials and liquid crystal monomers.
• Polymer & Resin Modification: Employed to introduce functional groups into polymer chains for specialty coatings, adhesives, and engineering plastics.
• Organic Synthesis Reagent: A valuable reagent in research laboratories for peptide coupling reactions and the preparation of esters and amides under mild conditions.
• Dye & Pigment Manufacturing: Intermediate in the synthesis of complex organic dyes and pigments, contributing to color fastness and specific properties.

Basic Information

Product Name	Methyl 4-Chlorocarbonylbenzoate
CAS No.	7377-26-6
Molecular Formula	C9H7ClO3
Molecular Weight	198.60 g/mol
Synonyms	Methyl 4-(Chloroformyl)benzoate; Methyl terephthaloyl chloride; 4-(Methoxycarbonyl)benzoyl chloride; Terephthalic acid monomethyl ester chloride; Methyl p-chlorocarbonylbenzoate; p-(Methoxycarbonyl)benzoyl chloride; Monomethyl terephthaloyl chloride; Methyl hydrogen terephthalate chloride
EINECS	Contact for details

Quality Control

Our Methyl 4-Chlorocarbonylbenzoate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and titration methods, to ensure high purity and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specifications and test results. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for your critical synthesis processes.

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

Specification

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

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