HO-PEG2-CH2COOtBu (CAS 149299-82-1) is a molecule with a PEG2 chain, a hydroxyl group, and a tert-butyl ester. It improves solubility and protects carboxyl groups for selective deprotection. Ideal for drug delivery, bioconjugation, and polymer chemistry.
Polyethylene Glycol PEG Linkers > Hydroxy PEG > Hydroxy-PEG-CH2CO2tBu
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