Description
mPEG-NH₂ (Methoxy Poly(ethylene glycol) Amine)
mPEG-NH₂ (methoxypoly(ethylene glycol) amine) is a linear monofunctional polyethylene glycol (PEG) derivative terminated with a reactive primary amine (-NH₂) group at one end and a methoxy group at the other.
This structure makes mPEG-NH₂ a widely used reagent in PEGylation and bioconjugation chemistry, providing a hydrophilic PEG spacer and a reactive amine handle for covalent coupling.
The primary amine reacts efficiently with activated carboxyl groups (such as NHS esters) to form stable amide bonds, and can also react with carbonyl groups such as aldehydes and ketones under appropriate conditions.
Key Applications
- PEGylation of proteins, peptides, and small molecules
- Drug delivery system modification
- Surface functionalization of nanoparticles and biomaterials
- Bioconjugation via NHS ester chemistry
- Formation of stable amide-linked PEG conjugates
Functional Advantages
- High reactivity of primary amine group
- Efficient coupling with carboxyl-activated compounds (NHS esters)
- Improves solubility and biocompatibility of conjugated systems
- Reduces immunogenicity and non-specific binding via PEG shielding
- Versatile linker for biomolecular engineering
Summary
mPEG-NH₂ is a versatile monofunctional PEG reagent designed for efficient covalent conjugation and surface modification in drug delivery, bioconjugation, and materials science applications.
