Propynol ethoxylate
Synonym(s):PME;Stefin B;STFB;CPI-B;CST6
- CAS NO.:3973-18-0
- Empirical Formula: C5H8O2
- Molecular Weight: 100.12
- MDL number: MFCD00099294
- EINECS: 223-601-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-28 18:52:05
What is Propynol ethoxylate?
Description
Propargyl-PEG2-alcohol has propargyl and alcohol end groups. The propargyl can participate in copper-catalyzed Click Chemistry reactions with azides.
Chemical properties
Propynol ethoxylate(PME) is a clear colourless to pale yellow oil.
The Uses of Propynol ethoxylate
Propynol Ethoxylate is an intermediate and it is shown to be used in the design and synthesis of a tag-free chemical probe for photoafiinity labeling.
What are the applications of Application
Propynol ethoxylate is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Propynol Ethoxylate is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
General Description
Propynol ethoxylate, known as 2-propyn-1-ol, is a colourless flammable liquid with a pleasant odour. This volatile organic compound (VOC) occurs naturally in plants and animals and can also be synthesised in a laboratory environment. Propargyl alcohol polyoxyethylene ether has a wide range of applications and plays an important role in scientific research and industrial processes. It is used as a fuel, solvent and reagent in chemical reactions, as well as an important ingredient in the manufacture of many pharmaceuticals and industrial products. In scientific research, it is used as a reagent in organic synthesis, as a solvent in analytical chemistry and as a fuel in combustion studies.
Properties of Propynol ethoxylate
| Boiling point: | 80-90 °C(Press: 12-14 Torr) |
| Density | 1.0261 |
| refractive index | 1.4502 |
| storage temp. | Sealed in dry,Store in freezer, under -20°C |
| solubility | Chloroform (Sparingly), Ethyl Acetate (Slightly) |
| form | Oil |
| pka | 14.22±0.10(Predicted) |
| color | Colourless to Pale Yellow |
| Stability: | Light Sensitive |
| InChI | InChI=1S/C5H8O2/c1-2-4-7-5-3-6/h1,6H,3-5H2 |
| CAS DataBase Reference | 3973-18-0(CAS DataBase Reference) |
| EPA Substance Registry System | Ethanol, 2-(2-propynyloxy)- (3973-18-0) |
Safety information for Propynol ethoxylate
| Signal word | Warning |
| Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. |
Computed Descriptors for Propynol ethoxylate
| InChIKey | GHGCQQRMJCSIBQ-UHFFFAOYSA-N |
| SMILES | C(O)COCC#C |
Propynol ethoxylate manufacturer
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![2-{2-[(1,1-DIMETHYLPROP-2-YNYL)OXY]ETHOXY}ETHAN-1-OL](https://img.chemicalbook.in/CAS/GIF/29871-35-0.gif)
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