Description

Carbonic Acid, 4-(Chlorocarbonyl)Phenyl Methyl Ester (9Ci) is a specialized organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in its bifunctional reactivity, featuring both an acid chloride and a carbonate ester group, making it a versatile building block for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and polymer industries who require high-purity intermediates for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for carbonate-linked prodrugs and polymer-drug conjugates.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides where its reactive groups facilitate the introduction of specific bioactive moieties.
• Polymer Chemistry: Serves as a monomer or cross-linking agent for synthesizing specialty polycarbonates, polyurethanes, and other functional polymers with tailored properties.
• Liquid Crystal & OLED Materials: Intermediate in the manufacture of advanced electronic materials, contributing to the molecular backbone of display and lighting components.
• Peptide & Protein Modification: Utilized as a reagent for selective acylation and carbonate formation in bioconjugation and proteomics research.
• Dye & Pigment Manufacturing: Acts as a coupling agent in the synthesis of high-performance colorants and photographic chemicals.

Basic Information

Product Name	Carbonic Acid, 4-(Chlorocarbonyl)Phenyl Methyl Ester (9Ci)
CAS No.	78152-12-2
Molecular Formula	C9H7ClO4
Molecular Weight	214.60 g/mol
Synonyms	4-(Chloroformyl)phenyl methyl carbonate; Methyl 4-(chlorocarbonyl)phenyl carbonate; p-(Methoxycarbonyloxy)benzoyl chloride; Terephthaloyl chloride, 4-(methoxycarbonyloxy)-; Carbonochloridic acid, 4-[(methoxycarbonyl)oxy]phenyl ester; 4-Carbomethoxyphenyl chloroformate; p-Carbomethoxyphenyl chloroformate
EINECS	Contact for details

Quality Control

Our Carbonic Acid, 4-(Chlorocarbonyl)Phenyl Methyl Ester (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance 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 and moisture-sensitive nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Purity (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.