PEG

N-(Tos-PEG4)-N-bis(PEG4-t-butyl ester) is a branched PEG linker with a Tos-PEG4 branch and two PEG4-t-butyl ester groups attached to a central nitrogen. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The t-butyl ester can be hydrolyzed under acidic conditions. PEG4 linker increases the water solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-N-Amido-PEG7-propargyl is a crosslinking reagent that enables the formation of triazole linkage with azides under the catalyzation of copper. The Boc-protected amine can be deprotected under mild acidic conditions. By introducing PEG chain into the molecule, the hydrophilicity can be greatly improved. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG2-t-Boc-hydrazide is a PEG linker containing an azide group and a Boc-protected hydrazide. The azide group allows the reaction with with alkyne, BCN, DBCO via Click Chemistry. The Boc can be deprotected under mild acidic conditions to form a reactive hydrazide, which can then be coupled with various carbonyl groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

SPDP acid contains SPDP and carboxylic acid moieties. The SPDP react with amine and thiol groups and are commonly used in the crosslinking of proteins. The carboxylic acid can react with primary amines in the presence of EDC and HATU, to form stable amide bonds. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG16-NHS ester is a PEG linker containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG-CH2CO2H, MW 2,000 is a PEGylation reagent with a terminal COOH which can react with primary amines in the presence of activator, such as EDC or HATU, to form a stable amide bond. The hydrophilic PEG chain increases the compounds water solubility. Reagent grade, for research purpose.

m-PEG-CH2CO2H, MW 20,000 is a carboxyl PEG polymer which can react with an amine in the presence of HATU or EDC to form a stable amide bond. Reagent grade, for research purpose.

m-PEG11-Tos is a PEG linker containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG10-azide is a water soluble click chemistry linker containing an azide group. It is reactive with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.