2-Methylpentanal
2-Methylpentanal (CAS: 123-15-9), with the molecular formula C6H12O and a molecular weight of 100.16 g/mol, is a branched-chain aldehyde. This compound is a valuable organic building block utilised in chemical synthesis. Its properties make it suitable for various research and development applications within the chemical industry, serving as an intermediate for more complex molecules.
- IUPAC
- 2-Methylvaleraldehyde

Chemical Synthesis Intermediate
2-Methylpentanal serves as a versatile intermediate in organic synthesis. It can be employed in reactions such as oxidation, reduction, and condensation to form a variety of derivative compounds.
Research and Development
As a readily available C6 aldehyde, it finds utility in research laboratories for developing new synthetic routes and exploring novel chemical entities. Its specific structure allows for tailored chemical modifications.
Aldehyde Chemistry
This compound is a practical example for studying the reactivity and properties of branched-chain aldehydes. It can participate in reactions characteristic of the aldehyde functional group.
| Molecular weight | 100.16 |
|---|---|
| Linear formula | CH3CH2CH2CH(CH3)CHO |
| Assay | 98% |
| Boiling point | 119-120 °C(lit.) |
| Density | 0.808 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.401(lit.) |
| Vapour density | 3.45 (vs air) |
| Autoignition temp | 390 °F |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 16 °C / 60.8 °F |
| Transport (UN / ADR) | UN 2367 3 / PGII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38-52/53 |
| Safety statements (S) | 16-26-36 |
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 2-Methylpentanal used for?
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2-Methylpentanal is used as an intermediate in chemical synthesis and in research and development laboratories for exploring new chemical entities and synthetic routes.
What is the CAS number and formula for 2-Methylpentanal?
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The CAS number for 2-Methylpentanal is 123-15-9, and its linear formula is CH3CH2CH2CH(CH3)CHO.
What grade and purity does Tech Serve Solutions supply for 2-Methylpentanal?
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Tech Serve Solutions supplies 2-Methylpentanal with an assay of 98%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated.
How should 2-Methylpentanal be handled safely?
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2-Methylpentanal is a flammable liquid and vapour (H225) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area, away from ignition sources.
How is 2-Methylpentanal packed and exported?
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2-Methylpentanal is available for export and is typically supplied in appropriate packaging suitable for hazardous materials, adhering to transport regulations. Please contact us for specific packaging and shipping details.
How can I request a sample or quote for 2-Methylpentanal?
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To request a sample or quote for 2-Methylpentanal, please contact our sales department via the website or provide your details through our online enquiry form.
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