Ethyl 4-methylvalerate
Ethyl 4-methylvalerate (CAS 25415-67-2), a clear liquid with the linear formula (CH3)2CHCH2CH2COOC2H5 and a molecular weight of 144.21 g/mol, is an ester primarily utilised as a versatile building block in organic synthesis. Its structure makes it valuable for introducing specific alkyl chains in the development of more complex molecules, particularly within the pharmaceutical and chemical industries. This compound serves as a key intermediate for various chemical manufacturing processes.
- IUPAC
- Ethyl 4-methylpentanoate,Ethyl isocaproate
- Synonyms
- Ethyl 4-methylpentanoateEthyl isocaproate

Organic Synthesis Intermediate
Ethyl 4-methylvalerate serves as a valuable building block in organic synthesis. It is employed to introduce the 4-methylpentanoyl group into various molecular structures, facilitating the creation of complex organic compounds.
Pharmaceutical Research
This ester finds application in pharmaceutical research and development. It can be utilised in the synthesis of active pharmaceutical ingredients (APIs) or as an intermediate in the multi-step creation of novel drug candidates.
Fine Chemical Manufacturing
As a C8-C9 ester, Ethyl 4-methylvalerate is a useful component in the fine chemical industry. Its specific structure allows for controlled reactions in the manufacturing of specialty chemicals for diverse industrial applications.
| Molecular weight | 144.21 |
|---|---|
| Linear formula | (CH3)2CHCH2CH2COOC2H5 |
| Assay | ≥97.0% (GC) |
| Boiling point | 159-160 °C(lit.) |
| Density | 0.868 g/mL at 20 °C(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 43 °C / 109.4 °F |
| Transport (UN / ADR) | UN 3272 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
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 Ethyl 4-methylvalerate used for?
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Ethyl 4-methylvalerate is primarily used as a building block in organic synthesis, particularly in the development of pharmaceuticals and fine chemicals. It acts as an intermediate for introducing the 4-methylpentanoyl moiety.
What is the CAS number and formula for Ethyl 4-methylvalerate?
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The CAS number for Ethyl 4-methylvalerate is 25415-67-2, and its linear formula is (CH3)2CHCH2CH2COOC2H5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ethyl 4-methylvalerate with a purity of ≥97.0% (GC). We do not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for Ethyl 4-methylvalerate?
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Ethyl 4-methylvalerate is a flammable liquid and vapour (H226). It requires handling with appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection. Store away from ignition sources.
How is Ethyl 4-methylvalerate packed and shipped?
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Ethyl 4-methylvalerate is packed and shipped in compliance with UN 3272 3 / PGIII regulations for flammable liquids, ensuring safe transport and export.
How can I request a sample or quote for Ethyl 4-methylvalerate?
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To request a sample or a quote for Ethyl 4-methylvalerate, please contact our sales department through the website or by phone.
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