Azido-PEG3-(CH2)3OH is a PEG derivative containing an azide group and a terminal hydroxyl group. 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 hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Hydroxy-PEG3-sulfonic acid is a PEG Linker.

Hydroxy-PEG3-PFP ester is a PEG derivative containing a hydroxyl group with a PFP ester group. It can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. PFP esters have similar applications as the NHS esters, but are more stable in aqueous solution. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Hydroxy-PEG2-PFP ester is a PEG derivative containing a hydroxyl group with a PFP ester group. It can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. PFP esters have similar applications as the NHS esters, but are more stable in aqueous solution. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Hydroxy-PEG5-CH2CO2tBu is a PEG derivative containing a hydroxyl group with a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Hydroxy-PEG3-NHS is a PEG derivative containing a hydroxyl group with an NHS ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

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.

Fmoc-PEG2-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 conditions 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.

Fmoc-PEG1-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 conditions 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.

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

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.

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.

Fluorescein-PEG3-(N-Boc)-Amine is a heterobifunctional PEG derivative containing a fluorescein dye and a Boc-protected amine group. The amine group can be deprotected under mild acidic conditions and reacted with carboxylic acid, activated NHS ester, and carbonyl (ketone, aldehyde) etc. Fluorescein is a common fluorescent tracer (494nm/521nm) for staining cells, tissues, biomarkers or nanoparticles and this reagent can be used to tag biomolecules and nanoparticles.

Fluorescein-PEG3-Amine is a fluorescein dye with excitation/emission maximum 494/517 nm containing a free amine group, which can be reactive with carboxylic acid, activated NHS ester, carbonyl (ketone, aldehyde) etc. The hydrophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.

Fluorescein-PEG4-Acid is a xanthene dye with excitation/emission maximum 494/517 nm and a free terminal carboxyl acid. Terminal carboxylic acids can react with primary amine groups in the presence of of activators (e.g. EDC, or DCC) to form a stable amide bond. It can be used as a quantum yield standard. The hydrophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.

DNP-PEG4-alcohol is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

DNP-PEG4-t-butyl ester is PEG Linker

Methyltetrazine-DBCO is a TCO reactive reagent containing a methyltetrazine group and a DBCO moiety. DBCO is very reactive toward Azide through click chemistry.

2-hydroxyethyl disulfide mono-Tosylate is a cleavable PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

THP-SS-PEG1-Tos is a cleavable PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

THP-SS-PEG1-t-butyl ester is a cleavable PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Acid-PEG2-SS-PEG2-acid is a cleavable PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

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

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

Azidoethyl-SS-ethylamine is a cleavable PEG linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Azidoethyl-SS-ethylalcohol is a cleavable PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Bromoacetamido-PEG4-t-butyl ester is a PEG derivative containing a bromide group and a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Bromoacetamido-PEG3-t-butyl ester is a PEG derivative containing a bromide group and a t-butyl protected carboxyl group. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The t-butyl protected carboxyl group can be deprotected under acidic conditions.