2-Methyl-3-hexyn-2-ol
2-Methyl-3-hexyn-2-ol (CAS: 5075-33-2) is an organic compound with the formula C2H5C≡CC(CH3)2OH and a molecular weight of 112.17 g/mol. This tertiary alcohol features an alkyne functional group, making it a valuable building block in organic synthesis. It is commonly employed in research and development for the creation of more complex molecules and novel chemical entities.

Organic Synthesis
As a functionalised alkyne, 2-Methyl-3-hexyn-2-ol serves as a versatile intermediate in various organic transformations. Its structure allows for diverse reactions, including additions and coupling reactions, to construct complex molecular architectures.
Research and Development
This compound is utilised in chemical research laboratories for exploring new synthetic pathways and developing novel compounds. Its specific reactivity profile makes it suitable for creating targeted molecules in areas such as medicinal chemistry and materials science.
Building Block
The presence of both an alkyne and a tertiary alcohol group makes 2-Methyl-3-hexyn-2-ol an excellent starting material or intermediate in multi-step synthetic sequences for fine chemicals.
| Molecular weight | 112.17 |
|---|---|
| Linear formula | C2H5C≡CC(CH3)2OH |
| Assay | 97% |
| Boiling point | 144 °C(lit.) |
| Density | 0.856 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.44(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 1987C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 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-Methyl-3-hexyn-2-ol used for?
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2-Methyl-3-hexyn-2-ol is primarily used as a building block in organic synthesis and in research and development for creating complex molecules and novel chemical entities.
What are the CAS number and chemical formula for 2-Methyl-3-hexyn-2-ol?
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The CAS number is 5075-33-2 and the linear chemical formula is C2H5C≡CC(CH3)2OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methyl-3-hexyn-2-ol with an assay of 97%. TSS does not represent this product as USP, BP, EP or other pharmacopoeia grades.
How should 2-Methyl-3-hexyn-2-ol be handled safely?
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2-Methyl-3-hexyn-2-ol is classified as a warning substance (GHS07) with hazard statements H315, H319, and H335, indicating it can cause skin irritation, serious eye irritation, and may cause respiratory irritation. Appropriate personal protective equipment, including eyeshields and gloves, should be worn. Ensure adequate ventilation.
Is 2-Methyl-3-hexyn-2-ol available for export?
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Yes, Tech Serve Solutions, a specialist global supplier and exporter since 1998, can supply and export 2-Methyl-3-hexyn-2-ol.
How can I request a quote or sample for 2-Methyl-3-hexyn-2-ol?
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Please contact our sales team via the website to request a quote or to arrange for a sample of 2-Methyl-3-hexyn-2-ol.
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