Mal-PEG8-acid is a PEG derivative containing a maleimide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG12-t-butyl ester is a PEG derivative containing an azide group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Amino-PEG9-t-butyl ester is a PEG derivative containing an amino group with a t-butyl protected carboxyl group. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions. PEG Linkers may be useful for the development of antibody drug conjugates and drug delivery methods.

Azido-PEG9-t-butyl ester is a PEG derivative containing an azide group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Amino-PEG10-t-butyl ester is a PEG derivative containing an amino group with a t-butyl protected carboxyl group. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions. PEG Linkers may be useful in the development of antibody drug conjugates and drug delivery methods.

Thiol-PEG6-t-butyl ester is a PEG derivative containing a thiol group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

S-acetyl-PEG6-t-butyl ester is a PEG Linker.

Fluorescein-PEG6- NHS ester is a fluorescein labeled PEG derivative containing a NHS group, which enables labeling for antibodies and other purified proteins at primary amines (lysine side chains). The hydrophilic PEG spacer arm increases solubility in aqueous media.

SPDP-PEG6-NHS ester is a PEG Linker.

Fmoc-PEG6-NHS ester is a PEG derivative containing an Fmoc-protected amine and an NHS ester. The hydrophilic PEG spacer increases solubility in aqueous media. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

Trityl-PEG8-azide is a PEG derivative containing an azide group and a trityl protected ester. Trityl group can be removed under acid conditions or hydrogenolysis. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media.

Propargyl-PEG7-t-butyl ester is a PEG derivative containing a propargyl group and a t-butyl protected carboxyl group. The propargyl group can be reacted with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

S-acetyl-PEG3-t-butyl ester is a PEG Linker.

S-acetyl-PEG4-t-butyl ester is a PEG Linker.

S-acetyl-PEG6-Tos is a PEG Linker.

Iodofenphos is an obsolete insecticide once used for the protection of stored products, livestock pests and in public health applications.

Carboxy-PEG2-sulfonic acid is a PEG Linker. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

Pyrene-PEG5-alcohol is a pyrene labeled PEG derivative containing an hydroxyl group which enables further derivatization or replacement with other reactive functional groups.

Amino-PEG3-sulfonic acid HCl salt is an amino PEG linker. PEG Amines contain an amino group which can react with acids, succinimidyl-active esters, or pentafluorophenyl esters for labeling, chemical modification, surface or particle modifications. PEG Linkers may also be useful for development of antibody drug conjugates.

N-Tos-N-(t-butoxycarbonyl)-aminoxy-PEG4-Tos is a PEG Linker.

t-Butoxycarbonyl-PEG2-sulfonic acid is a PEG Linker

Azido-PEG2-sulfonic acid is a PEG derivative containing an azide group and a sulfonic acid. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media. This reagent can support polypeptide synthesis, graft polymer compounds, PEG-modified functional coatings for new materials, etc.

Carboxy-PEG5-sulfonic acid is a PEG Linker.

Pyrene-PEG3-azide is a pyrene labeled PEG derivative containing an azide group which enables Click Chemistry labeling with any alkyne-bearing molecules and thus turns any molecule into pyrene-bearing probe.

Pyrene-PEG4-acid is a pyrene labeled PEG derivative for the surface functionalization of carbon nanotube, graphene, graphene oxide, and reduced graphene oxide. A strong pi-pi stacking bond is formed between the pyrene and the aromatic rings on single wall and multi-walled carbon nanotubes.

t-Boc-N-amido-PEG3-sulfonic acid is a biochemical. PEG Linkers may be useful in the development of antibody drug conjugates.

DNP-PEG4-t-butyl ester is PEG Linker

Propargyl-PEG1-SS-PEG1-PFP ester is a cleavable PEG Linker. Cleavable PEG Linkers may be useful in the development of antibody drug conjugates.

Propargyl-PEG4-sulfonic acid is a PEG derivative containing a propargyl group and a sulfonic acid. The propargyl group can be reacted with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. PEG Linkers can be useful in the development of antibody drug conjugates.

t-Butoxycarbonyl-PEG5-sulfonic acid is a PEG Linker.