4-Methoxycinnamic acid, predominantly trans
4-Methoxycinnamic acid (CAS 830-09-1) is a trans-predominant organic compound with the linear formula CH3OC6H4CH=CHCO2H. Its molecular weight is 178.18 g/mol. This versatile molecule serves as a key building block in organic synthesis and finds applications in materials science, particularly in the development of liquid crystals and organic electronics. It is also recognised for its presence in natural sources like Curcuma longa.
- Synonyms
- CH3OC6H4CH=CHCO2H4-Methoxy-trans-cinnamic acidp-Methoxycinnamic acid

Organic Synthesis
Serves as a valuable building block in the synthesis of more complex organic molecules. Its structure allows for diverse chemical transformations, making it useful in research and development settings.
Materials Science
Utilised in the development of advanced materials, including liquid crystals and organic electronics. Its properties contribute to the creation of new functional materials for various technological applications.
Phytochemical Research
Identified as a phytochemical, it is studied for its presence in plants such as Curcuma longa (Turmeric). This makes it relevant for research in natural product chemistry and nutrition.
| Molecular weight | 178.18 |
|---|---|
| Linear formula | CH3OC6H4CH=CHCO2H |
| Assay | 99% |
| Melting point | 170-173 °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 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Transition Temp | crystalline phase to nematic phase 173.5 °Cnematic phase to isotropic phase 190 °C |
|---|
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-Methoxycinnamic acid used for?
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4-Methoxycinnamic acid is used as a building block in organic synthesis, in materials science for liquid crystals and organic electronics, and is studied as a phytochemical found in plants like Curcuma longa.
What are the CAS number and formula for 4-Methoxycinnamic acid?
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The CAS number is 830-09-1 and the linear formula is CH3OC6H4CH=CHCO2H. The molecular weight is 178.18 g/mol.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Methoxycinnamic acid with an assay of 99%. We do not represent this product as meeting any pharmacopoeia standards unless explicitly stated.
How should 4-Methoxycinnamic acid be handled safely?
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Handle with care to avoid dust formation and inhalation. Use a dust mask (type N95), wear eyeshields, and gloves. Avoid contact with skin, eyes, and clothing. Ensure good ventilation. Specific precautionary statements are P261-P305 + P351 + P338.
Is 4-Methoxycinnamic acid a controlled substance?
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No, the provided data does not indicate that 4-Methoxycinnamic acid is a controlled substance.
How is 4-Methoxycinnamic acid packed, shipped, and exported?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals. Specific packaging and shipping details are provided upon request and in accordance with international regulations.
How can I request a sample or quote for 4-Methoxycinnamic acid?
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Please contact our sales department or use the online enquiry form to request a sample or a quote for 4-Methoxycinnamic acid.
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