Methyl 3-pentenoate
Methyl 3-pentenoate (CAS 818-58-6), a clear liquid with the molecular formula C6H10O2 and a molecular weight of 114.14 g/mol, is a versatile ester and carbonyl compound. It serves as a valuable building block in organic synthesis and chemical research. This compound is primarily utilised in laboratory settings for the creation of more complex molecules and in the development of new chemical entities.

Organic Synthesis Intermediate
Methyl 3-pentenoate acts as a key intermediate in multi-step organic synthesis. Its reactive double bond and ester functionality allow for various chemical transformations, enabling the construction of diverse molecular structures.
Research and Development
This ester is employed in research laboratories for exploring novel synthetic routes and developing new chemical compounds. It is a useful reagent for chemists investigating unsaturated esters and their reactions.
Building Block Chemistry
As a C6 to C7 organic building block, Methyl 3-pentenoate provides a foundational structure for more elaborate chemical architectures. It is particularly useful for introducing specific functional groups into target molecules.
| Molecular weight | 114.14 |
|---|---|
| Linear formula | CH3CH=CHCH2COOCH3 |
| Assay | ≥90% (GC) |
| Grade | technical |
| Density | 0.931 g/mL at 20 °C(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 24 °C / 75.2 °F |
| Transport (UN / ADR) | UN 3272 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10-22 |
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 3-pentenoate used for?
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Methyl 3-pentenoate is used as an intermediate in organic synthesis and as a building block in chemical research and development.
What is the CAS number and formula for Methyl 3-pentenoate?
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The CAS number is 818-58-6 and the linear formula is CH3CH=CHCH2COOCH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 3-pentenoate at a technical grade with an assay of ≥90% (GC). We do not represent this product as USP, BP, or EP grade.
How should Methyl 3-pentenoate be handled safely?
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Methyl 3-pentenoate is a flammable liquid and vapour (H226) and harmful if swallowed (H302). Handle with appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, in a well-ventilated area. Store away from heat and ignition sources.
Is Methyl 3-pentenoate a controlled substance?
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The provided data does not indicate that Methyl 3-pentenoate is a controlled substance.
How is Methyl 3-pentenoate packed, shipped, and exported?
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Methyl 3-pentenoate is packed and shipped according to regulatory standards for flammable liquids. Tech Serve Solutions is experienced in global export procedures.
How can I request a sample or quote for Methyl 3-pentenoate?
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To request a sample or a quotation for Methyl 3-pentenoate, please contact our sales team via the website or direct inquiry channels.
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