• CAS No.：
  133803-81-3
• Synonyms：
  OH-PEG2-TBA
  Hydroxy-PEG2-t-butyl ester
  tert-Butyl 9-Hydroxy-4,7-dioxanonanoate
  TERT-BUTYL 3-(2-(2-HYDROXYETHOXY)ETHOXY)PROPANOATE
  
• Purity：
  ≥95%
• MF：
  C₁₁H₂₂O₅
• MW：
  234.29
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  Applicated in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Hydroxy-PEG2-tert-butyl (OH-PEG2-CH2CH2COOtBu) is a PEG linker comprising both hydroxyl and tert-butyl groups. The hydrophilic PEG spacer enhances solubility in aqueous media, while the hydroxyl group offers versatility for further derivatization or substitution with other reactive functional groups. The tert-butyl-protected carboxyl group can be selectively deprotected under acidic conditions, allowing for controlled manipulation of the molecule's chemical properties.

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