Polyethylene Glycol (PEGs & PEOs)

Mal-PEG1-NHS ester is a PEG derivative containing a maleimide group and an NHS ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified

Mal-PEG1-NHS ester is a PEG derivative containing a maleimide group and an NHS ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified

Mal-PEG1-PFP is a PEG derivative containing maleimide and PFP moieties. Maleimides are thiol-reactive and react between pH 6.5 and 7.5 to form thiolester bonds. PFP moieties are amine-reactive and are less susceptible to undergo hydrolysis. The

Mal-PEG1-PFP is a PEG derivative containing maleimide and PFP moieties. Maleimides are thiol-reactive and react between pH 6.5 and 7.5 to form thiolester bonds. PFP moieties are amine-reactive and are less susceptible to undergo hydrolysis. The

Mal-PEG1-PFP is a PEG derivative containing maleimide and PFP moieties. Maleimides are thiol-reactive and react between pH 6.5 and 7.5 to form thiolester bonds. PFP moieties are amine-reactive and are less susceptible to undergo hydrolysis. The

Mal-PEG1-PNP-carbonate.

Mal-PEG1-PNP-carbonate.

Mal-PEG1-PNP-carbonate.

Mal-PEG1-t-butyl ester is a PEG derivative containing a maleimide group and a t-butyl ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The

Mal-PEG1-t-butyl ester is a PEG derivative containing a maleimide group and a t-butyl ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The

Mal-PEG1-t-butyl ester is a PEG derivative containing a maleimide group and a t-butyl ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The

Mal-PEG1-Val-Cit-PAB-PNP is a cleavable ADC linker. The Val-Cit will specifically be cleaved by Cathepsin B. As this enzyme is only present in the lysosome, the ADC payload will be released only in the cell.