4-Chlorophenylacetic acid
4-Chlorophenylacetic acid (CAS: 1878-66-6; Formula: ClC6H4CH2CO2H) is a substituted phenylacetic acid derivative with a molecular weight of 170.59 g/mol. This compound serves as a valuable building block in organic synthesis. It is frequently employed as an intermediate in the preparation of more complex molecules, particularly within the pharmaceutical and agrochemical sectors, due to the reactive carboxylic acid group and the presence of a chlorine atom on the phenyl ring.

Organic Synthesis Intermediate
4-Chlorophenylacetic acid is a versatile intermediate used in the synthesis of various organic compounds. Its structure allows for diverse chemical modifications, making it a key component in multi-step synthetic routes.
Pharmaceutical Research
This compound finds application in the development of novel pharmaceutical agents. It can be incorporated into the scaffold of potential drug candidates, contributing to their biological activity and physicochemical properties.
Agrochemical Development
As a building block, 4-Chlorophenylacetic acid can be utilized in the synthesis of active ingredients for agrochemicals. Its structural features can impart desired properties for crop protection applications.
| Molecular weight | 170.59 |
|---|---|
| Linear formula | ClC6H4CH2CO2H |
| Assay | 99% |
| Grade | Vetec™ reagent grade |
| Solubility | ethanol: soluble100 mg/mL, clear, faintly yellow |
| Melting point | 102-105 °C(lit.) |

Hazard statements
- H312Harmful in contact with skin
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21 |
| Safety statements (S) | 36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Chlorophenylacetic acid used for?
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4-Chlorophenylacetic acid is primarily used as an intermediate in organic synthesis, particularly in the research and development of pharmaceuticals and agrochemicals.
What are the CAS number and chemical formula for 4-Chlorophenylacetic acid?
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The CAS number for 4-Chlorophenylacetic acid is 1878-66-6, and its chemical formula is ClC6H4CH2CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Chlorophenylacetic acid in Vetec™ reagent grade with an assay of 99%. TSS does not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling 4-Chlorophenylacetic acid?
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4-Chlorophenylacetic acid is classified with GHS07 symbol and a 'Warning' signal word. It carries hazard statements H312 (Harmful in contact with skin) and H332 (Harmful if inhaled), requiring appropriate personal protective equipment (PPE) such as gloves and respiratory protection.
How is 4-Chlorophenylacetic acid packed, shipped, and exported?
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As a specialist global supplier, Tech Serve Solutions handles the packing, shipping, and export of 4-Chlorophenylacetic acid in compliance with all relevant regulations for chemical substances.
How can I request a sample or a quote for 4-Chlorophenylacetic acid?
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To request a sample or a quote for 4-Chlorophenylacetic acid, please contact our sales team through the website or by phone, providing your specific requirements.
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