PEG

Biotin-PEG-Succinimidyl Carbonate, MW 5,000 is a PEG polymer active ester which is reactive with amine via formation of amide bond. The biotin has strong binding affinity with streptavadin and avadin. Reagent grade, for research purpose.

Biotin-PEG-Succinimidyl Valerate, MW 3,400 is a biotin PEGylation reagent with an NHS ester which is reactive specifically and efficiently with lysine and N-terminal amino groups at pH 7-9 to form a stable amide bond. Reagent grade, for research purpose.

Biotin-PEG-Succinimidyl Valerate, MW 5,000 is an NHS active ester biotinylation reagent which is reactive with amine. The biotin has strong binding affinity to streptavidin or avidin for molecular labeling or detection. Reagent grade, for research purpose.

Biotin-PEG-Thiol, MW 2,000 is a biotinylation PEG polymer reagent which is reactive with maleimide via formation of thioether bond. Reagent grade, for research purpose.

Succinimidyl Carbonate-PEG-CH2COOH, MW 2,000 is a heterobifunctional PEG polymer. The succinimidyl group can react with an amine to form a stable amide bond. The carboxyl group can conjugate with amine molecule in the presence of EDC or HATU. Reagent grade, for research purpose.

Succinimidyl Carbonate-PEG-CH2COOH, MW 3,400 is a polyPEG with a terminal carboxylic acid and a succinimidyl carbonate. The NHS ester reacts with amine nucleophile. The terminal -COOH can react with primary amine in the presence of activator, such as EDC or HATU, to form a stable amide bond. Reagent grade, for research purpose.

Succinimidyl Carbonate-PEG-CH2COOH, MW 5,000 is an amine reactive and water soluble PEG polymer. Carboxylic acid reacts with amine in the presence of HATU or EDC via formation of covalent amide linkage. Reagent grade, for research purpose.

Fmoc-N-amido-PEG-NHS ester, MW 2,000 is a PEGylation reagent containing a Fmoc protecting group and a terminal succinimidyl group. NHS ester is reactive with amine nucleophile very rapidly at pH 7-9. The hydrophilic PEG chain increases the water solubility properties of the compound. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. Reagent grade, for research purpose.

Fmoc-N-amido-PEG-Succinimidyl Valerate, MW 3,400 is an amine-protected PEG polymer with a succinimidyl group. The molecule can react with amine group of lysine or other amino molecule. The Fmoc group can be deprotected under basic condition to obtain the free amine for further conjugations. The PEG spacer is hydrophilic and therefore increases the water solubility properties of the compound. Reagent grade, for research purpose.