4-(4-Methylphenyl)-4-oxobutyric acid
4-(4-Methylphenyl)-4-oxobutyric acid (CAS 4619-20-9) is a chemical compound with the linear formula CH3C6H4COCH2CH2CO2H and a molecular weight of 192.21 g/mol. This organic building block, characterised by its carboxylic acid and ketone functionalities, serves as a valuable intermediate in organic synthesis. It is frequently employed in the construction of more complex molecules within academic research and industrial chemical development.

Organic Synthesis Intermediate
Utilised as a precursor in the synthesis of various organic compounds. Its difunctional nature allows for diverse chemical transformations.
Research and Development
A key building block for chemists exploring novel molecular structures and reaction pathways in laboratory settings.
Material Science Applications
Potential use in the development of new materials where its specific structural features can be incorporated.
| Molecular weight | 192.21 |
|---|---|
| Linear formula | CH3C6H4COCH2CH2CO2H |
| Assay | 98% |
| Melting point | 127-130 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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-(4-Methylphenyl)-4-oxobutyric acid used for?
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4-(4-Methylphenyl)-4-oxobutyric acid (CAS 4619-20-9) is primarily used as a building block and intermediate in organic synthesis and research and development.
What is the CAS number and chemical formula for 4-(4-Methylphenyl)-4-oxobutyric acid?
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The CAS number is 4619-20-9, and the linear formula is CH3C6H4COCH2CH2CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(4-Methylphenyl)-4-oxobutyric acid with an assay of 98%. This product is supplied for research and manufacturing purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 4-(4-Methylphenyl)-4-oxobutyric acid be handled safely?
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Based on GHS information, this compound is a warning substance (H315, H319, H335) and can cause skin irritation, serious eye irritation, and respiratory irritation. Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Always handle in a well-ventilated area and avoid inhalation of dust.
Is 4-(4-Methylphenyl)-4-oxobutyric acid available for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-(4-Methylphenyl)-4-oxobutyric acid.
How can I request a quote or sample for 4-(4-Methylphenyl)-4-oxobutyric acid?
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Please contact our sales team via the website or by phone to request a quote or sample for 4-(4-Methylphenyl)-4-oxobutyric acid.
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