Ethynyl methyl vinyl carbinol
Synonym(s):Ethynyl methyl vinyl carbinol
- CAS NO.：3230-69-1
- Empirical Formula: C6H8O
- Molecular Weight: 96.13
- MDL number: MFCD01709006
- EINECS: 221-770-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:16:47
What is Ethynyl methyl vinyl carbinol?
Chemical properties
reddish to yellow-brown liquid
The Uses of Ethynyl methyl vinyl carbinol
3-Methyl-1-penten-4-yn-3-ol is used as a building block in organic synthesis including that of primary allenic amines and alcohols and also of pluraflavin A “Aglycon” which is cytotoxic.
General Description
3-Methyl-1-penten-4-yn-3-ol is an acetylenic alcohol. It reacts with ruthenium vinyl carbene to form a ten-membered η2-olefin coordinated ruthenacycle. The efficiency of different palladium catalysts for the hydrogenation of 3-methyl-1-penten-4-yn-3-ol under continuous-flow liquid-phase conditions has been evaluated. It undergoes allylic rearrangement to form cis and trans isomers of 3-methyl-2-penten-4-yn-l-ol.
Properties of Ethynyl methyl vinyl carbinol
| Melting point: | 25°C (estimate) |
| Boiling point: | 63-65 °C/100 mmHg (lit.) |
| Density | 0.89 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 90 °F |
| form | clear liquid |
| pka | 12.53±0.29(Predicted) |
| Specific Gravity | 0.88 |
| color | Colorless to Light yellow to Light orange |
| CAS DataBase Reference | 3230-69-1(CAS DataBase Reference) |
| NIST Chemistry Reference | 3-Methyl-1-penten-4-yn-3-ol(3230-69-1) |
Safety information for Ethynyl methyl vinyl carbinol
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H302:Acute toxicity,oral |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for Ethynyl methyl vinyl carbinol
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