PEG

Bis-PEG25-NHS ester is a PEG linker containing two NHS ester groups. The hydrophilic PEG spacer increases solubility in aqueous media. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-PEG25-TFP ester is a PEG linker with two terminal TFP ester moieties. TFP esters are amine reactive and are also more stable than NHS esters against hydrolysis. The PEG chain increases the water solubility properties of compounds in aqueous media. The water solubility properties of PEG chains are enhanced as the PEG chain grows. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-PEG29-acid is a PEG linker containing two terminal carboxylic acid groups. The hydrophilic PEG spacer increases solubility in aqueous media. The terminal carboxylic acids 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.

Azido-PEG23 amine is a long chain, water soluble PEG linker containing an azide and an amine group. The azide group is reactive with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The amine group is reactive with carboxylic acids, activated NHS ester. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG35 amine is a monodisperse, aqueous soluble PEG linker consisting of an azide group and an amine group. The azide group is reactive with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The amine group is reactive with carboxylic acids, activated NHS ester. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG24-acid is an aqueous soluble biotinylation reagent that is reactive amine(NH2) containing molecule in the presence of EDC. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG23-amine is long chain biotinylation molecule that is reactive to carboxyl groups or 5'phosphate groups to form stable amide bonds. It is water soluble and PEG spacer increases solubility in aqueous media of the molecules conjugated to the biotin compound. It also helps to minimize steric hindrance involved with the binding to avidin molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG23-azide is a aqueous soluble biotinylation reagent that can react with DBCO or BCN moiety in copper-free Click Chemistry reaction to form a stable triazole linkage. The extended hydrophilic PEG spacer also minimize steric hindrance involved with the binding to avidin molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-propargyl-PEG6 has two propargyl groups which can participate in Click Chemistry reactions to yield a stable triazole linkage with azide compounds; copper is needed as a catalyst. The 6 units of PEG increase the hydrophilicity of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.