PEG

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.

Fluorescein-PEG-Biotin, MW 3,400 is a PEG derivative with fluorescein/FITC dye for labeling biomolecules/nanoparticles or staining cells/tissues. It gives a strong green fluorescence. The biotin allows strong binding with avidin or streptavidin. Reagent grade, for research purpose.

Fluorescein-PEG-Biotin, MW 5,000 is a biotinylated PEG polymer which can bind strongly with avidin or streptravidin for molecul target detection. The green dye can be used in biology for staining cells, tissues, biomarkers or nanoparticles. FITC has peak absorption or excitation at 494 nm and maximum emission at 521 nm. Reagent grade, for research purpose.

Lipoamide-PEG-Biotin, MW 1,000 is a lipoic acid polyPEG which can bind to metallic surface through disulfide bond. The PEG derivative can be used for biotinylation due to its strong binding with avidin/streptavidin. Reagent grade, for research purpose.

Biotin-PEG-CH2CO2H, MW 1,000 is a carboxyl polyPEG used for biotinylation due to its strong binding with avidin/streptavidin. The carboxyl is reactive with amine in the presence of activating agent, such as HATU or EDC, to generate a covalent amide bond. Reagent grade, for research purpose.

Biotin-PEG-CH2CO2H, MW 2,000 can strongly bind with protein, such as avidin or streptavidin, via formation of biotin-protein complex. This biotinylation polymer is used for non-radioactive labeling as well as purification of proteins and other target molecules. The carboxylic acid is reactive with amine in the presence of activator, such as HATU or EDC, to generate a covalent amide linkage. Reagent grade, for research purpose.

Biotin-PEG-CH2CO2H, MW 5,000 is a linear polydisperse PEG for biotinylation. The PEG derivative can strongly bind with avidin/streptavidin and used for non-radioactive labeling as well as purification of proteins and other target molecules. The carboxyl (-COOH) can react with an amine (-NH2) in the presence of activating agent (HATU or EDC) to from a stable amide bond. Reagent grade, for research purpose.

Biotin-PEG-CH2CO2H, MW 10,000 is a caboylic acid functional polyPEG used for biotinylation due to its strong binding with avidin/streptavidin. The carboxylic acid moiety can react with protein/peptide or other amine moleule in the presence of activator, such as HATU or EDC. Reagent grade, for research purpose.