Mal-PEG5-t-butly ester
- CAS NO.：518044-36-5
- Empirical Formula: C19H31NO8
- Molecular Weight: 401.45
- MDL number: MFCD22683300
- Update Date: 2026-05-28 06:27:30
What is Mal-PEG5-t-butly ester?
Description
Mal-PEG4-t-butyl ester is a PEG linker containing a maleimide group and a t-butyl ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.
Properties of Mal-PEG5-t-butly ester
| Boiling point: | 499.9±40.0 °C(Predicted) |
| Density | 1.156±0.06 g/cm3(Predicted) |
| solubility | DMSO : 100 mg/mL (249.10 mM; Need ultrasonic) |
| pka | -2.34±0.20(Predicted) |
| form | Oil |
| color | Colorless to light yellow |
Safety information for Mal-PEG5-t-butly ester
| 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 Mal-PEG5-t-butly ester
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