4-Phenoxybutyric acid
4-Phenoxybutyric acid (CAS 6303-58-8) is an organic compound with the linear formula C6H5OCH2CH2CH2COOH and a molecular weight of 180.20 g/mol. As a carboxylic acid featuring a phenoxy group, it serves as a versatile building block in organic synthesis. It is commonly employed in the development of new chemical entities and as an intermediate in the preparation of more complex molecules within research and industrial settings.

Organic Synthesis Intermediate
4-Phenoxybutyric acid is utilised as a key intermediate in the synthesis of various organic compounds. Its functional groups allow for diverse chemical transformations, making it valuable in the construction of novel molecular architectures.
Building Block for Research Chemicals
This compound serves as a fundamental building block for the creation of specialised research chemicals. Its structure is amenable to modifications for exploring new chemical properties and applications in academic and industrial laboratories.
Pharmaceutical Intermediate Development
In the pharmaceutical sector, 4-Phenoxybutyric acid can be a precursor in the synthesis pathways of potential drug candidates. Its incorporation into molecular structures aids in the development of new therapeutic agents.
| Molecular weight | 180.20 |
|---|---|
| Linear formula | C6H5OCH2CH2CH2COOH |
| Assay | ≥98.0% (HPLC) |
| Melting point | 63-65 °C |
| 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 4-Phenoxybutyric acid primarily used for?
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4-Phenoxybutyric acid is primarily used as a versatile building block and intermediate in organic synthesis, particularly in the development of research chemicals and pharmaceutical intermediates.
What are the CAS number and formula for 4-Phenoxybutyric acid?
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The CAS number for 4-Phenoxybutyric acid is 6303-58-8, and its linear formula is C6H5OCH2CH2CH2COOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Phenoxybutyric acid with an assay of ≥98.0% determined by HPLC. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
What are the safety considerations when handling 4-Phenoxybutyric acid?
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Handling 4-Phenoxybutyric acid requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The compound has a WGK Germany rating of 3.
How is 4-Phenoxybutyric acid packed, shipped, and exported?
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4-Phenoxybutyric acid is carefully packed to maintain its integrity during transit and is available for export globally by Tech Serve Solutions, adhering to all relevant shipping regulations.
How can I request a quote or sample of 4-Phenoxybutyric acid?
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To request a quote or a sample of 4-Phenoxybutyric acid, please contact our sales team through the methods provided on the Tech Serve Solutions website.
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