Lipids & Polymers

t-Boc-N-amido-PEG-CH2COOH, MW 5,000 is a heterofunctional PEG molecule containing carboxyl and amino protected group. In the presence of activator (EDC or HATU), a carboxyl can react with an amine to form an amide bond. The tert-boc can be deprotected under acidic condition. Reagent grade, for research purpose.

t-Boc-N-amido-PEG-CH2COOH, MW 10,000 is is an amine protected polydisperse PEG. The carboxylic acid is reactive with amine in the presence of activating agent, such as EDC or HATU. The tert-butoxycarbonyl protecting group (t-boc) can be easily removed under acidic condition to yield a free amine which can then react with an active ester (NHS). Reagent grade, for research purpose.

SPDP-PEG-CH2CO2H, MW 1,000 is a pyridyl disulfide modified polyPEG which can react with thiol moiety to produce a new disulfide bond and generating unreactive pyridine-2-thione as a by product. Reaction between carboxyl and amine can be done in the presence of activating agent, such as HATU/EDC, to generate amide linkage. Reagent grade, for research purpose.

HO-PEG-acid, MW 2,000 is a heterobifunctional PEG polymer which can react with amine in the presence of activating agent, such as HATU or EDC. Reagent grade, for research purpose.

Biotin-PEG-OH, MW 1,000 is a biotynilation PEG reagent which can strongly bind to avidin and streptavidin for protein labeling or purification. Reagent grade, for research purpose.

Biotin-PEG-OH, MW 2,000 is a linear polyPEG for biotinylation. It has strong binding affinity to avidin or streptavidin. The hydroxyl group can further derivatize the compound. Reagent grade, for research purpose.

Biotin-PEG-OH, MW 3,400 can form a strong bond with avidin or streptavidin in biotinylation process. The hydroxyl group can further derivatize the compound. Reagent grade, for research purpose.

Biotin-PEG-OH, MW 5,000 is a PEG polymer with a terminal hydroxyl for biotinylation. Biotin can strongly bind to avidin or streptavidin. The Avidin-biotin complex is the strongest known non-covalent interaction (Kd = 10-15M) between a protein and ligand. The hydroxyl group can further derivatize the compound. Reagent grade, for research purpose.

Fluorescein-PEG-Biotin, MW 2,000 is a polyPEG with green fluorescent probe for staining cells, tissues, biomarkers or nanoparticles. The PEG derivative can strongly bind to avidin or streptavidin for molecular target detection. Reagent grade, for research purpose.