PEG

Bromo-PEG4-acid is a PEG linker containing a bromide group and a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Propargyl-PEG5-NHS ester has a propargyl group and an NHS ester group. The terminal NHS ester and is an amine reactive moeity which is useful for derivatizing peptides, antibodies, amine coated surfaces etc. The propargyl group can participate in Click Chemistry reactions with azide compounds, copper is needed for catalyzation. The PEG units can enhance the hydrophilicity of the molecule. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

PEG3-Tos is a PEG linker containing a hydroxyl group and a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The tosyl group is a very good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-N-amido-PEG1-acid is a PEG linker containing a terminal carboxylic acid and Boc-protected amino group. The hydrophilic PEG spacer increases solubility in aqueous media. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. The Boc group can be deprotected under mild acidic conditions to form the free amine. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG4-Amido-tri-(carboxyethoxymethyl)-methane is a multi-arm PEGylation reagent containing an azide group and three hydroxyl groups. The azide group enables Click Chemistry. The indicated molecular weight of the multi-arm PEG is the sum of the molecular weights of all the arms. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG4-Amido-tri-(t-butoxycarbonylethoxymethyl)-methane is a branched PEGylation compound with a terminal azide group and three t-butyl groups. The t-butyl groups can be removed under acidic conditions. The azide group can participate in copper-catalyzed Click Chemistry reactions with alkynes, DBCO and BCN to form stable triazole linkages. The hydrophilic PEG linker increases the water solubility of compounds in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG4-Amido-tri-(carboxyethoxymethyl)-methane is a branched PEG linker with a terminal azide group and three terminal carboxylic acids. The azide group enables PEGylation via Click Chemistry. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

1,3-bis(carboxyethoxy)-2,2-bis(carboxyethoxy)propane is a 4-branched molecule with carboxylic acid groupss to be conjugate with amino groups of other molecule or entity. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Amino-Tri-(t-butoxycarbonylethoxymethyl)-methane is a amine containing chemistry building block. The amino group is reactive with activated NHS esters or carboxylic acids in the presence of coupling agent, EDC or HATU. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.