Description

4-Chlorophenylacetic Acid is a versatile aromatic carboxylic acid derivative that serves as a key organic intermediate in advanced chemical synthesis. Its value lies in the reactive chlorophenyl and acetic acid functional groups, which enable precise molecular modifications for creating complex target compounds. This high-purity building block is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable and consistent raw materials for their processes.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), active pharmaceutical ingredients (APIs), and other bioactive molecules.
• Agrochemical Synthesis: Used in the manufacturing of herbicides, fungicides, and plant growth regulators, leveraging the chlorophenyl moiety for biological activity.
• Liquid Crystal & OLED Material Production: Serves as a building block for advanced electronic materials, including liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs).
• Fine Chemical & Dye Intermediate: Employed in the production of complex dyes, pigments, and other specialty fine chemicals requiring specific aromatic substitutions.
• Peptide Synthesis & Biochemistry: Acts as a protected or modified amino acid analog in peptide coupling reactions and biochemical research.
• Polymer Modification: Used to introduce functional groups into polymer chains to alter physical properties like solubility, adhesion, or thermal stability.

Basic Information

Product Name	4-Chlorophenylacetic Acid
CAS No.	1878-66-6
Molecular Formula	C8H7ClO2
Molecular Weight	170.59 g/mol
Synonyms	(4-Chlorophenyl)acetic Acid; p-Chlorophenylacetic Acid; 4-Chlorobenzeneacetic Acid; 2-(4-Chlorophenyl)acetic Acid; 4-CPA; Para-Chlorophenylacetic Acid; NSC 403697; 4-Chloro-α-toluic Acid
EINECS	217-522-0

Quality Control

Our 4-Chlorophenylacetic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure it meets the high-purity standards required for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources. The product is stable under recommended conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	103°C - 107°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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