PEG

NH-bis(PEG3-t-butyl ester) is a PEG linker containing an amino group and 3 PEG units. The amino groups is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

NH-bis(PEG3-acid) HCl salt is a branched PEG molecule that is reactive with activated NHS esters under neutral condition Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG3-Sulfone-PEG4-acid is a PEG linker containing one azide group with a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) forming a stable amide bond. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Propargyl-PEG4-Sulfone-PEG4-acid is a PEG linker containing a propargyl group with a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) forming a stable amide bond. The propargyl groups can react with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield stable triazole linkages. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Acid-PEG4-Sulfone-PEG4-acid contains two PEG-acid chains connected by a sulfone group. The sulfone group can be conjugated with thiol groups of proteins. The terminal carboxylic acid can react with primary amines in the presence of activators such as EDC and HATU to form stable amide bonds. The hydrophilic PEG spacer increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG-Mal, MW 2,000 is a homobifunctional polymer with two maleimides which are reactive with thiol group of protein (cysteine) or other thio molecules. Reagent grade, for research purpose.

Azido-PEG3-S-PEG3-azide is a PEG linker containing two azide groups. The azide group enables Click Chemistry with alkyne, DBCO and BCN moieties. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG3-Sulfone-PEG4-t-butyl ester is a PEG linker containing one azide group and one t-butyl protected carboxyl group. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group (COOH) prevents self coupling or polymerization under standard acid/amine or acid/hydroxyl coupling conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Hydroxy-PEG2-methylamine is a PEG linker containing a hydroxyl group with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.