3-Methoxyphenylacetic acid
3-Methoxyphenylacetic acid (CAS 1798-09-0, C9H10O3) is a carboxylic acid with a molecular weight of 166.17 g/mol. This organic compound serves as a valuable building block in chemical synthesis. It is primarily utilized in research and development settings for the creation of more complex molecules. Its structure, featuring both a carboxylic acid group and a methoxy-substituted phenyl ring, makes it a versatile intermediate for various organic transformations.

Organic Synthesis Intermediate
3-Methoxyphenylacetic acid is employed as a key intermediate in the synthesis of various organic compounds. Its reactive carboxylic acid functionality and aromatic ring allow for diverse chemical modifications.
Pharmaceutical Research
This compound may be used in the early stages of pharmaceutical research and development for the discovery of new therapeutic agents. It can serve as a precursor to biologically active molecules.
Material Science
As an organic building block, 3-Methoxyphenylacetic acid can be investigated for its potential incorporation into novel materials, leveraging its specific structural features.
| Molecular weight | 166.17 |
|---|---|
| Linear formula | CH3OC6H4CH2CO2H |
| Assay | ≥99% |
| Melting point | 65-69 °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 3-Methoxyphenylacetic acid used for?
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3-Methoxyphenylacetic acid is primarily used as a building block in organic synthesis and in pharmaceutical research for the development of new compounds.
What is the CAS number and chemical formula for 3-Methoxyphenylacetic acid?
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The CAS number is 1798-09-0, and the chemical formula is C9H10O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Methoxyphenylacetic acid with an assay of ≥99%. We do not represent this product as meeting USP, BP, EP, or other pharmacopoeia standards unless explicitly stated.
What are the safety precautions for handling 3-Methoxyphenylacetic acid?
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3-Methoxyphenylacetic acid is a warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, in a well-ventilated area.
How is 3-Methoxyphenylacetic acid packed and shipped?
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Tech Serve Solutions packs and ships chemicals professionally, adhering to all necessary regulations for global export. Specific packaging details depend on quantity and destination.
How can I request a sample or quote for 3-Methoxyphenylacetic acid?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team through our website or by phone, referencing the product name and CAS number.
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