α,4-Dimethylphenylacetic acid
α,4-Dimethylphenylacetic acid (CAS: 938-94-3), a carboxylic acid with the molecular formula C10H12O2 and a molecular weight of 164.20 g/mol, serves as a valuable building block in chemical synthesis. This compound features a phenylacetic acid core substituted with a methyl group at the alpha position and another methyl group on the phenyl ring. It is often employed in research and development settings for the construction of more complex organic molecules.
- IUPAC
- 2-(4-Methylphenyl)propanoic acid,p-Methylhydratropic acid
- Synonyms
- 2-(4-Methylphenyl)propanoic acidp-Methylhydratropic acid

Organic Synthesis Intermediate
Acts as a key intermediate in the synthesis of various organic compounds. Its structure allows for diverse chemical modifications, making it useful for constructing target molecules in medicinal chemistry and materials science.
Research and Development
Utilised in laboratory settings for exploring new synthetic pathways and developing novel chemical entities. It is a common reagent in academic and industrial research for small-scale synthesis and discovery.
Building Block for Complex Molecules
Serves as a fundamental building block for creating more elaborate molecular architectures. The presence of both a chiral center and aromatic functionality provides versatility in synthetic strategies.
| Molecular weight | 164.20 |
|---|---|
| Linear formula | CH3C6H4CH(CH3)CO2H |
| Assay | 97% |
| Melting point | 37-42 °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 |
|---|---|
| Flash point | 110 °C / 230 °F |
| 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.
| Gene Information | human ... IL8RA(3577) |
|---|
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 α,4-Dimethylphenylacetic acid used for?
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α,4-Dimethylphenylacetic acid is primarily used as an intermediate and building block in organic synthesis and research and development for the creation of complex organic molecules.
What is the CAS number and molecular formula?
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The CAS number for α,4-Dimethylphenylacetic acid is 938-94-3, and its molecular formula is C10H12O2. The linear formula is CH3C6H4CH(CH3)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies α,4-Dimethylphenylacetic acid with an assay of 97%. We do not represent this product as USP, BP, or EP grade; it is suitable for research and chemical synthesis applications.
How should α,4-Dimethylphenylacetic acid be handled safely?
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α,4-Dimethylphenylacetic acid is a warning compound (GHS07) that may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves. Ensure good ventilation and avoid breathing dust.
Is α,4-Dimethylphenylacetic acid a controlled substance?
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Based on the provided data, there is no indication that α,4-Dimethylphenylacetic acid (CAS: 938-94-3) is a controlled substance.
How is this chemical packed, shipped, and exported?
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Tech Serve Solutions professionally packs and ships chemicals globally, adhering to all relevant regulations for safe transport and export. Specific packaging details are confirmed upon order.
How can I request a sample or a quote?
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To request a sample or a quote for α,4-Dimethylphenylacetic acid, please contact our sales team through the website or by phone, providing your specific requirements.
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