PEG

t-Boc-N-Amido-PEG5-amine is a Boc protected PEG linker containing an free amino group and5 PEG units. The hydrophilic PEG spacer increases solubility in aqueous media. The amino group is reactive with carboxylic acids, activated NHS esters. The Boc group can be deprotected under mild acidic conditions to free the amine. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-PEG3-PFP ester is an amine reactive PEG linker. The two PFP ester moieties can form stable amide bonds and have been found to be very stable because they are less susceptible to undergo hydrolysis. The hydrophilic PEG linker increases the water solubility of the compound in aqueous envionments. Longer PEG chains tend to have enhanced water solubility properties compared to shorter PEG chains. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-PEG2-PFP ester is an amine reactive PEG linker. The two PFP ester moieties can form stable amide bonds and have been found to be very stable because they are less susceptible to undergo hydrolysis. The hydrophilic PEG linker increases the water solubility of the compound in aqueous envionments. Longer PEG chains tend to have enhanced water solubility properties compared to shorter PEG chains. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-Amido-PEG8-t-butyl ester is a PEG linker containing an azide group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The t-butyl protected carboxyl group can be deprotected under acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Hydroxy-PEG1-t-butyl ester is a PEG linker containing a hydroxyl group with a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl group can be deprotected under acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG6-alcohol, a water soluble reagent, consist of an azide and a terminal hydroxyl group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG6-acid is a biotin PEG reagent. The hydrophilic PEG spacer arm imparts water solubility that is transferred to the biotinylated molecule. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG4-acid is a biotinylation reagent which can react with amine molecules in the presence of activator EDC or HATU. PEG attached to the biotin gives an extended spacer arm that permits the biotin to reach into the binding pocket of the protein. The PEG moiety also increases solubility of Biotin-PEG conjugates considerably. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG4-acid is a PEG linker containing a maleimide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. 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.