Heptaethylene glycol
- CAS NO.：5617-32-3
- Empirical Formula: C14H30O8
- Molecular Weight: 326.38
- MDL number: MFCD00002876
- EINECS: 227-040-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-21 11:20:27
What is Heptaethylene glycol?
Description
Heptaethylene glycol contains repeating ethylene glycol subunits and two terminal hydroxyl groups. The hydroxyl groups can react to further derivatize the compound. The hydrophilic PEG linker increases the water solubility of a compound in aqueous media. The water solubility properties of the PEG linker are enhanced with longer PEG chains.
The Uses of Heptaethylene glycol
Heptaethylene Glycol is used for the preparation of large ring crown ether compounds.
Definition
ChEBI: Heptaethylene glycol is a poly(ethylene glycol).
General Description
Heptaethylene glycol belongs to the class of organic compounds known as polyethylene glycols. These are oligomers or polymers of ethylene oxide, with the general formula (C2H4O)n (with n>=3). It is an extremely weak basic (essentially neutral) compound (based on its pKa). Heptaethylene glycol is a PEG-based PROTAC linker that can be used to synthesise PROTACs.
Properties of Heptaethylene glycol
| Boiling point: | 244 °C / 0.6mmHg |
| Density | 1.13 |
| refractive index | 1.4653 (589.3 nm 20℃) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform, Ethyl Acetate (Sparingly) |
| pka | 14.06±0.10(Predicted) |
| form | Oil |
| color | Colourless |
| InChI | InChI=1S/C14H30O8/c15-1-3-17-5-7-19-9-11-21-13-14-22-12-10-20-8-6-18-4-2-16/h15-16H,1-14H2 |
| EPA Substance Registry System | Heptaethylene glycol (5617-32-3) |
Safety information for Heptaethylene glycol
| 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 |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Heptaethylene glycol
| InChIKey | XPJRQAIZZQMSCM-UHFFFAOYSA-N |
| SMILES | C(O)COCCOCCOCCOCCOCCOCCO |
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