NHS ester PEG

C18-PEG-NHS ³
Small-molecule NHS ester PEG ³⁴

Catalog No.	Name	M.W.	Purity
In stock BPG-2862	mPEG-CH2CH2COONHS, MW 1k-5k	Customizable	N/A
In stock BPG-2848	NHS-PEG-NHS, MW 1k-4k	Customizable	N/A
In stock BPG-2793	Azido-PEG-NHS, MW 1k-4K	Customizable	N/A
In stock BPG-2785	MAL-PEG-NHS, MW 1k-4k	Customizable	N/A
In stock BPG-2777 CAS: 488085-18-3	Fmoc-NH-PEG-NHS, MW 1k-4k	Customizable	N/A
In stock BPG-2773	Boc-NH-PEG-NHS, MW 1k-4k	Customizable	N/A
In stock BPG-2768	Biotin-PEG-NHS, MW 1k-4k	Customizable	N/A
In stock BPG-2701	Y-shape-PEG-NHS, MW 40k	N/A	N/A
In stock BPG-1622	NHS-PEG-(γ)PGA, PEG MW 1k-5k	Customizable	N/A
In stock BPG-1580	RGD-PEG-NHS, MW 1k-5k	Customizable	N/A
In stock BPG-1552	cRGD-PEG-NHS, MW 1k	N/A	N/A
In stock BPG-1515	NHS-PEG-Plys, PEG MW 1k-5k	Customizable	N/A
In stock BPG-1238	DSPE-PEG-NHS, MW 1k-5k	Customizable	N/A
In stock BPG-0957	Pyrene-PEG-NHS Ester, MW 1k-10k	Customizable	N/A
In stock BPG-0922	OPSS-PEG-NHS, MW 1k-10k	Customizable	N/A
In stock BPG-0857	HO-PEG-NHS, MW 1k-10k	Customizable	N/A
In stock BPG-0769	Cholesterol-PEG-NHS, MW 1k-10k	Customizable	N/A
In stock BPG-0639	Acetal-PEG-NHS, MW 1k-10k	Customizable	N/A

Background

NHS ester PEG is a compound with a PEG chain and an NHS ester functional group. The N-hydroxysuccinimide (NHS) ester-activated PEG ligand is an amine-responsive reagent that can be used for modifying proteins, peptides, or any other surfaces that have an available amino group. The NHS ester reacts efficiently with primary amino groups in neutral or weakly alkaline buffers to form stable amide bond. In addition to the N-terminus of each peptide, antibodies and other proteins typically contain multiple lysine (K) residues. NHS-activated PEG reagents can therefore be used to target multiple primary amines.

Fig. 1. Examples of NHS ester PEG.

Structural Features of NHS ester PEG

PEG chain: The PEG chain is characterized by high solubility, hydrophilicity, low toxicity, high biocompatibility and structural tunability.
NHS ester functional group: NHS ester (N-hydroxysuccinimide ester) is formed by the reaction of succinic acid and hydroxybutyrate. The NHS ester functional group is often used in biochemistry to react with amino compounds to form amino ester bonds.
Hydroxybutyrate chain: The terminal hydroxybutyrate chain of NHS ester PEG is the part that reacts with the target compound. It can form amino ester bonds with biomolecules containing amino groups.

Examples of NHS ester PEG

Biotin-PEG-NHS

Biotin-PEG-NHS has biotin and NHS esters at each end of the molecular chain and can be used to label proteins, antibodies, small molecules or surfaces with available amine groups. At pH 7-9, the NHS ester reacts rapidly with primary amine groups to form stable amide bonds.

DSPE-PEG-NHS

DSPE-PEG-NHS can provide NHS groups for affixation to amine-containing portions or ligands. Its target molecules include antibodies, aptamers, proteins, and peptides, and are commonly used to deliver targeted drugs through lipid bilayers, extend circulating half-life, and reduce non-specific protein binding or cell adhesion.

MAL-PEG-NHS

MAL-PEG-NHS is a heterogeneous bifunctional modifier. It is mostly used in targeted drug research and has a wide range of applications in cross-linking of protein carriers and ligands.

NHS-PEG-Plys

NHS-PEG-Plys is a biodegradable polymer organic compound. Plys is rich in cations and has good membrane properties. Based on this property, Plys can be used as carriers for certain drugs and are therefore widely used in medical and pharmaceutical applications. NHS-PEG-Plys can be easily doped into liposomes and other nanoparticles via the NHS-amine reaction.

Functions of NHS Ester PEG

Biomarkers

NHS ester PEG can be used as a biomarker reagent for attaching PEG molecules to biomolecules. This PEG labeling can alter the properties of the biomolecule, such as increasing its solubility, stability, and cyclic half-life.

Surface Modification

NHS ester PEG can be used to surface modify materials. By attaching PEG molecules to the surface of a material, non-specific interactions between the material and the organism can be reduced, thus enhancing its performance in biomedical applications.

Resistance to Protein Adsorption

PEG has good hydrophilicity and can form a hydrated layer that prevents proteins from coming into direct contact with the surface of the material, thereby reducing the potential for non-specific adsorption and biodegradation.

Advantages of NHS ester PEG

High Reactivity - The NHS ester functional group reacts very rapidly under alkaline conditions with compounds containing amino groups (NH2) to form stable amino ester bonds.
Enhanced Stability - For biomolecules, PEG labeling can increase their cycle time and stability, prolonging their in vivo action.
Convenient Chemical Modification - NHS ester PEG can be introduced into target compounds by reacting with compounds containing amino groups. This chemical modification method is simple and convenient and can be performed under laboratory conditions, providing flexibility and maneuverability for a variety of applications.

BOC Sciences offers high-quality PEG products with low polydispersity, high reactivity, and high purity. BOC Sciences' PEG products include PEG derivatives by structure, PEG derivatives by functional group, PEG raw materials, PEG copolymers, and more. If you are interested in our products, please feel free to contact us.

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