| Identification | Back Directory |  [Name]
  Mal-PEG5-t-butly ester |  [CAS]
  518044-36-5 |  [Synonyms]
  Mal-PEG4-Boc Mal-PEG4-OtBu Mal-PEG4-COOtBu MAL-PEG4-CH2CH2COOTBU Mal-PEG5-t-butly ester Mal-PEG4-t-butyl ester MAL-dPEG4-t-butyl ester tert-butyl 1-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3,6,9,12-tetraoxapentadecan-15-oate 4,7,10,13-Tetraoxapentadecanoic acid, 15-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-, 1,1-dimethylethyl ester |  [Molecular Formula]
  C19H31NO8 |  [MDL Number]
  MFCD22683300 |  [MOL File]
  518044-36-5.mol |  [Molecular Weight]
  401.45 |  
 | Chemical Properties | Back Directory |  [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) |  [form ]
  Oil |  [pka]
  -2.34±0.20(Predicted) |  [color ]
  Colorless to light yellow |  
 | Hazard Information | Back Directory |  [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. |  
  
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