Description

Benzoic Acid, 3-(Chlorocarbonyl)-5-Hydroxy-, Methyl Ester (9Ci) is a specialized benzoic acid derivative that serves as a key multifunctional intermediate in advanced organic synthesis. Its molecular structure, featuring both a reactive acid chloride group and a protected hydroxyl moiety, makes it a versatile building block for constructing complex molecules with high precision. This compound is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for the development of new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly for creating ester and amide linkages in complex molecules.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its functional groups allow for targeted modifications.
• Fine Chemical Production: Serves as a building block for synthesizing specialty chemicals, dyes, and performance materials requiring specific benzoate frameworks.
• Polymer Chemistry: Employed in the development of specialty polymers and resins, where it can act as a monomer or a modifying agent to introduce specific properties.
• Academic & Industrial Research: A valuable reagent for methodological studies in organic chemistry, including studies on esterification, acylation, and protecting group strategies.

Basic Information

Product Name	Benzoic Acid, 3-(Chlorocarbonyl)-5-Hydroxy-, Methyl Ester (9Ci)
CAS No.	167630-01-5
Molecular Formula	C9H7ClO4
Molecular Weight	214.60 g/mol
Synonyms	5-Hydroxyisophthalic Acid Monomethyl Ester Chloride; Methyl 3-Chlorocarbonyl-5-hydroxybenzoate; 3-(Chlorocarbonyl)-5-hydroxybenzoic Acid Methyl Ester; 5-Hydroxy-3-(methoxycarbonyl)benzoyl Chloride; Isophthalic Acid, 5-Hydroxy-, 1-Methyl Ester 3-Chloride; 1-Methyl 3-Chloroformyl 5-Hydroxybenzoate
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 3-(Chlorocarbonyl)-5-Hydroxy-, Methyl Ester (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and industrial synthesis. Production adheres to current Good Manufacturing Practices (cGMP) where applicable. Comprehensive analytical testing is performed, and a Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee material integrity for your critical processes.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%

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