Cyclopentylphenylacetic acid
Cyclopentylphenylacetic acid (CAS: 3900-93-4), with the molecular formula C13H16O2 and a molar mass of 204.26 g/mol, is a carboxylic acid derivative. It serves as a valuable building block in organic synthesis. This compound is primarily utilised in the preparation of various organic molecules, including ethylene derivatives and ester analogs with potential applications in medicinal chemistry research.

Synthesis of 1-cyclopentyl-l-phenylethylenes
Cyclopentylphenylacetic acid has been employed as a precursor in the synthesis of 1-cyclopentyl-l-phenylethylenes, contributing to the development of novel organic compounds.
Preparation of Anticholinergic Ester Analogs
The compound is utilised in the creation of 'soft' ester analogs of anticholinergic agents, indicating its role in pharmaceutical research and development.
Organic Building Block
As a versatile organic building block, Cyclopentylphenylacetic acid is instrumental in constructing more complex molecular architectures for various chemical synthesis applications.
| Molecular weight | 204.26 |
|---|---|
| Linear formula | C5H9CH(C6H5)CO2H |
| Assay | 97% |
| Solubility | methanol: soluble50 mg/mL, clear, colorless |
| Application | Cyclopentylphenylacetic acid was used in the synthesis of:• 1-cyclopentyl-l-phenyl-2-(p-alkoxyphenyl)ethylenes1• soft ester analogs of anticholinergics2 |
| Melting point | 98-100 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 Cyclopentylphenylacetic acid used for?
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Cyclopentylphenylacetic acid is used as a building block in organic synthesis, including the preparation of specific ethylene derivatives and soft ester analogs of anticholinergics.
What are the CAS number and molecular formula for Cyclopentylphenylacetic acid?
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The CAS number for Cyclopentylphenylacetic acid is 3900-93-4, and its molecular formula is C13H16O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cyclopentylphenylacetic acid with a minimum purity of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should Cyclopentylphenylacetic acid be handled safely?
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Safety precautions for handling Cyclopentylphenylacetic acid include wearing eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used when handling this compound. Consult the safety data sheet for detailed information.
Is Cyclopentylphenylacetic acid a controlled substance?
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The provided data does not indicate that Cyclopentylphenylacetic acid (CAS: 3900-93-4) is a controlled substance.
How is Cyclopentylphenylacetic acid packaged and shipped?
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Tech Serve Solutions globally supplies and exports fine chemicals. Specific packaging and shipping details for Cyclopentylphenylacetic acid are available upon request.
How can I request a quote or sample for Cyclopentylphenylacetic acid?
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To request a quote or sample for Cyclopentylphenylacetic acid, please contact our sales team through the website or by phone.
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