o-Tolylacetic acid
o-Tolylacetic acid (CAS 644-36-0), with the molecular formula CH3C6H4CH2CO2H and a molecular weight of 150.17 g/mol, is a carboxylic acid derivative. This organic compound serves as a valuable building block in chemical synthesis. It is recognised for its utility in the preparation of more complex organic molecules within research and development settings. Its chemical structure makes it a useful intermediate for various synthetic routes.
- IUPAC
- 2-Methylphenylacetic acid

Organic Synthesis Intermediate
o-Tolylacetic acid is employed as a key intermediate in the synthesis of various organic compounds. Its carboxylic acid functionality allows for diverse chemical transformations.
Building Block for Complex Molecules
The compound functions as a fundamental building block in the construction of larger, more intricate molecular structures. This is particularly relevant in pharmaceutical and agrochemical research.
Research and Development
Utilised in laboratory settings for exploratory chemistry and process development. Its availability as a reagent supports innovation in synthetic chemistry.
| Molecular weight | 150.17 |
|---|---|
| Linear formula | CH3C6H4CH2CO2H |
| Assay | 99% |
| Grade | ReagentPlus® |
| Melting point | 88-90 °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) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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 o-Tolylacetic acid used for?
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o-Tolylacetic acid is primarily used as a building block and intermediate in organic synthesis and research and development.
What is the CAS number and formula for o-Tolylacetic acid?
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The CAS number is 644-36-0 and the linear formula is CH3C6H4CH2CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies o-Tolylacetic acid at a purity of 99% with a ReagentPlus® grade. We do not represent this product as USP, BP, or EP grade.
How should o-Tolylacetic acid be handled?
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Handling requires appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust, as it can cause skin irritation, serious eye irritation, and respiratory irritation (H315, H319, H335).
Is o-Tolylacetic acid a controlled substance?
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Based on the provided data, o-Tolylacetic acid is not listed as a controlled substance.
How is o-Tolylacetic acid packed and shipped?
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o-Tolylacetic acid is packed for safe transit and is exported globally by TSS. Specific packaging details can be provided upon request.
How can I request a sample or quote for o-Tolylacetic acid?
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Please contact our sales team through the website to request a sample or a detailed quote for o-Tolylacetic acid.
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