Description
General Description
tBoc-PEG-NH2 is a versatile heterobifunctional PEG intermediate designed for orthogonal synthetic strategies. The terminal primary amine readily reacts with activated carboxylic acids, NHS esters, aldehydes, epoxides, isothiocyanates, and other amine-reactive functional groups to form stable covalent linkages.
The opposite terminal amine is protected with a Boc group, allowing selective modification of the free amine while preventing undesired side reactions. After completion of the desired synthetic sequence, the Boc protecting group can be removed under acidic conditions, such as with trifluoroacetic acid (TFA) or hydrochloric acid in dioxane, to generate NH2-PEG-NH2.
The PEG spacer provides excellent water solubility, molecular flexibility, and biocompatibility. tBoc-PEG-NH2 is widely employed in the synthesis of heterobifunctional PEG derivatives, peptide conjugates, polymeric drug delivery systems, hydrogels, nanoparticles, and advanced biomaterials.
Applications
- PEG linker synthesis
- Heterobifunctional PEG synthesis
- Peptide synthesis
- Drug conjugation
- Polymer synthesis
- Nanoparticle functionalization
- Hydrogel synthesis
- Surface modification
- Biomaterials engineering
- Biomedical research
Features and Benefits
- Boc-protected primary amine
- Free primary amine
- Orthogonal functionalization
- Acid-labile protecting group
- Excellent water solubility
- High synthetic versatility
- Excellent biocompatibility
- Ideal PEG intermediate
- Available in multiple PEG molecular weights
Typical method for Boc deprotection
