Description
Acetal-PEG-OH is a versatile heterobifunctional PEG building block designed for acid-triggered functionalization and controlled-release applications. The terminal acetal (diethoxy) group serves as a protected aldehyde that can be selectively deprotected under mildly acidic conditions (typically pH 4–6) to produce Aldehyde-PEG-OH.
The generated aldehyde readily reacts with primary amines, hydrazides, aminooxy compounds, and other nucleophiles to form Schiff bases, hydrazones, or oximes, making this reagent particularly useful for site-selective bioconjugation and pH-responsive delivery systems.
The terminal hydroxyl group provides an additional site for chemical modification into carboxyl, amine, NHS ester, azide, alkyne, acrylate, methacrylate, and numerous other PEG derivatives.
The hydrophilic PEG spacer provides excellent water solubility, molecular flexibility, and biocompatibility. Acetal-PEG-OH is widely used in polymer synthesis, hydrogel preparation, nanoparticle engineering, targeted drug delivery, and advanced biomaterials development.
Applications
- pH-responsive drug delivery
- Polymer synthesis
- PEG linker synthesis
- Aldehyde precursor
- Protein conjugation
- Hydrogel synthesis
- Nanoparticle functionalization
- Surface modification
- Biomaterials engineering
- Biomedical research
Features and Benefits
- Acid-labile acetal functionality
- Protected aldehyde precursor
- Terminal hydroxyl group
- Mild acid deprotection
- Excellent water solubility
- Excellent biocompatibility
- Versatile synthetic intermediate
- Suitable for pH-responsive systems
- Available in multiple PEG molecular weights
