5-Methyl-1-hexyne
5-Methyl-1-hexyne (CAS 2203-80-7) is a terminal alkyne with the molecular formula C7H12 and a molar mass of 96.17 g/mol. This organic compound is a valuable building block in chemical synthesis. It is frequently utilised in organic chemistry research and development for the construction of more complex molecules. Supplied by Tech Serve Solutions, it is available with an assay of 97%.

Organic Synthesis Intermediate
5-Methyl-1-hexyne serves as a versatile intermediate in organic synthesis. Its terminal alkyne functionality allows for various addition reactions, making it useful for constructing carbon frameworks in the development of novel compounds.
Research and Development
This alkyne is employed in research laboratories for exploring new synthetic pathways and developing novel chemical entities. Its specific structure makes it a useful starting material for academic and industrial R&D projects.
Building Block for Complex Molecules
As a functionalised alkyne, 5-Methyl-1-hexyne acts as a key building block for synthesising more complex organic structures. It can be incorporated into various chemical processes requiring a C7 alkyne moiety.
| Molecular weight | 96.17 |
|---|---|
| Linear formula | HC≡CCH2CH2CH(CH3)2 |
| Assay | 97% |
| Density | 0.728 g/mL at 25 °C |
| Refractive index | n20/D 1.407 |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -7 °C / 19.4 °F |
| Transport (UN / ADR) | UN 1993BE 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 9-16-29-33 |
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 5-Methyl-1-hexyne used for?
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5-Methyl-1-hexyne is primarily used as an intermediate in organic synthesis and as a building block for creating more complex molecules in research and development settings.
What are the CAS number and chemical formula for 5-Methyl-1-hexyne?
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The CAS number for 5-Methyl-1-hexyne is 2203-80-7, and its chemical formula is C7H12. The linear formula is HC≡CCH2CH2CH(CH3)2.
What grade and purity does Tech Serve Solutions supply for 5-Methyl-1-hexyne?
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Tech Serve Solutions supplies 5-Methyl-1-hexyne with an assay of 97%. This product is intended for research and chemical synthesis purposes and is not represented as USP, BP, or EP grade.
How should 5-Methyl-1-hexyne be handled safely?
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5-Methyl-1-hexyne is a highly flammable liquid and vapour (H225). Handling requires strict adherence to safety protocols, including avoiding heat, sparks, and open flames. Appropriate personal protective equipment, such as eyeshields, gloves, and suitable respiratory protection, must be used. Ensure adequate ventilation and take precautionary measures against static discharge.
Is 5-Methyl-1-hexyne available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 5-Methyl-1-hexyne, and can arrange for worldwide shipment.
How can I request a sample or quote for 5-Methyl-1-hexyne?
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To request a sample or a quotation for 5-Methyl-1-hexyne, please contact our sales team through the website or by calling our customer service line.
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