Methyl 10-undecenoate
Methyl 10-undecenoate (CAS: 111-81-9), with the molecular formula CH₂=CH(CH₂)₈CO₂CH₃ and a molar mass of 198.30 g/mol, is an unsaturated fatty acid methyl ester. This compound serves as a valuable building block in organic synthesis. It is notably utilized in the modification of silicone monomers for the preparation of advanced silicone nanostructures in aqueous environments.
- IUPAC
- 10-Undecenoic acid methyl ester,Undecylenic acid methyl ester
- Synonyms
- 10-Undecenoic acid methyl esterUndecylenic acid methyl ester

Silicone Nanostructure Synthesis
Methyl 10-undecenoate is employed to modify commercial silicone monomers, such as 1,3,5,7-tetramethylcyclotetrasiloxane. This modification facilitates the preparation of silicone hollow nano/microstructures in water, offering potential applications in materials science and nanotechnology.
Organic Synthesis Intermediate
As an unsaturated ester, Methyl 10-undecenoate is a versatile intermediate in organic chemistry. Its terminal alkene and ester functionalities allow for a range of chemical transformations, making it useful for constructing more complex organic molecules.
Fatty Acid Derivative Research
This compound is a methyl ester of undecylenic acid, positioning it within the broader category of fatty acids and their derivatives. It is utilized in research exploring the properties and applications of lipid-based compounds and their conjugates.
| Molecular weight | 198.30 |
|---|---|
| Linear formula | CH2=CH(CH2)8CO2CH3 |
| Assay | 96% |
| Boiling point | 245 °C(lit.) |
| Density | 0.882 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.437(lit.) |
| Application | Methyl 10-undecenoate, unsaturated fatty acid ester, is used to modify commercial silicone monomer, 1,3,5,7-tetramethylcyclotetrasiloxane for the preparation of silicone hollow nano/microstructures in water1. |


Hazard statements
- H302Harmful if swallowed
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Flash point | 115 °C / 239 °F |
| Transport (UN / ADR) | UN 3082 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20/22 |
| Safety statements (S) | 60-61 |
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 Methyl 10-undecenoate used for?
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Methyl 10-undecenoate is used as a building block in organic synthesis and for modifying silicone monomers to prepare silicone nanostructures in water. It is also studied as a fatty acid derivative.
What is the CAS number and chemical formula for Methyl 10-undecenoate?
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The CAS number is 111-81-9, and the chemical formula is CH₂=CH(CH₂)₈CO₂CH₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 10-undecenoate with an assay of 96%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should Methyl 10-undecenoate be handled safely?
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Methyl 10-undecenoate is harmful if swallowed or inhaled and is toxic to aquatic life with long-lasting effects. Handle with appropriate personal protective equipment, including eyeshields and gloves, and avoid release to the environment. Refer to the safety data sheet for comprehensive handling instructions.
Is Methyl 10-undecenoate shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Methyl 10-undecenoate, and can fulfil international shipping requirements.
How can I request a sample or quote for Methyl 10-undecenoate?
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To request a sample or a quote for Methyl 10-undecenoate, please contact our sales department through the website or by phone.
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