3,4-Dimethoxyphenylacetic acid
3,4-Dimethoxyphenylacetic acid (CAS 93-40-3), also known by its linear formula (CH3O)2C6H3CH2CO2H, is a valuable organic compound with a molecular weight of 196.20 g/mol. This carboxylic acid serves as a key building block in organic synthesis. It is frequently employed in the development of pharmaceuticals and other fine chemicals, contributing to complex molecular structures. Its well-defined chemical properties make it a reliable reagent for various research and industrial applications.
- IUPAC
- 3,4-Dimethoxyphenylacetic acid,Homoveratric acid
- Synonyms
- (CH3O)2C6H3CH2CO2HHomoveratric acid

Pharmaceutical Intermediate
3,4-Dimethoxyphenylacetic acid is utilised in the multi-step synthesis of active pharmaceutical ingredients (APIs). Its structure provides a versatile scaffold for creating complex drug molecules.
Organic Synthesis Reagent
As a carboxylic acid derivative, it functions as a fundamental building block in various organic transformations. It is instrumental in constructing carbon frameworks for novel compounds.
Research and Development
This compound is used in academic and industrial research laboratories for exploring new chemical reactions and developing innovative materials. Its availability aids in advancing chemical science.
| Molecular weight | 196.20 |
|---|---|
| Linear formula | (CH3O)2C6H3CH2CO2H |
| Assay | 98% |
| Melting point | 96-98 °C(lit.) |

Hazard statements
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37 |
| 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 3,4-Dimethoxyphenylacetic acid used for?
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3,4-Dimethoxyphenylacetic acid is primarily used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals and other fine chemicals. It serves as a valuable building block for constructing complex molecular structures in research and industrial applications.
What are the CAS number and formula for 3,4-Dimethoxyphenylacetic acid?
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The CAS number for 3,4-Dimethoxyphenylacetic acid is 93-40-3. Its linear formula is (CH3O)2C6H3CH2CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,4-Dimethoxyphenylacetic acid with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 3,4-Dimethoxyphenylacetic acid be handled?
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3,4-Dimethoxyphenylacetic acid is classified as an irritant. It can cause serious eye irritation (H319) and may cause respiratory irritation (H335). Always wear appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator filter (type N95 or P1). Ensure good ventilation and avoid breathing dust.
Is 3,4-Dimethoxyphenylacetic acid exported by Tech Serve Solutions?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3,4-Dimethoxyphenylacetic acid.
How can I request a quote or sample for 3,4-Dimethoxyphenylacetic acid?
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To request a quote or sample, please contact our sales department through the website or by phone. Our team will be pleased to assist you with your specific requirements.
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