Catalog # Pkg Size Price(USD) Quantity
A134-2 4 x 2 mg $129.00
A134-10 10 mg $95.00
A134-25 25 mg $195.00
A134-100 100 mg $495.00
A134-500 500 mg $1,695.00

DBCO-PEG4-NHS Ester reacts specifically and efficiently with a primary amine (e.g., side chain of lysine residues or aminosilane-coated surfaces) at pH 7-9 to form a covalent bond. The hydrophilic polyethylene glycol (PEG) spacer arm imparts water solubility and provides a long and flexible connection that minimizes steric hindrance involved with ligation to complementary azide-containing molecules.