4-Arm PEG-X/Y , MW 2k-20k

4-Arm PEG-X/Y represents bifunctional 4-arm PEG reagents. It has two different functional groups X and Y with 1:3, 3:1 or 2:2 ratio. The products listed below are generally in stock. Please contact us for ordering. If you look for different X and Y groups, please contact us for custom syntehsis.

4-Arm PEG-SC(2)/OH(2), MW 2k;

4-Arm PEG-SC(2)/OH(2), MW 20k;

4-Arm PEG-Alkyne(2)/OH(2), MW 2k;

4-Arm PEG-Amine(1)/Acrylamide (3), MW 10k;

4-Arm PEG-Amine(3)/Alkyne (1), MW 2k;

4-arm PEG-Amine(2)/Acrylate(2), MW 2k;

4-arm PEG-NHS(1)/Acrylate(3), MW 10k;

4-Arm PEG-Acrylamide(3)/NHS(1), MW 2k;

4-Arm PEG-FITC(1)/NHS(3), MW 5k;

4-Arm PEG-DBCO(3)/Amine(1), MW 2k;

4-Arm PEG-DBCO(3)/NHS(1), MW 5k;

4-Arm PEG DBCO(3)/Mal(1), MW 2k;

4-Arm PEG-Thiol(1)/Acid(3), MW 5k;

4-Arm PEG-Thiol(1)/Acid(3), MW 20k;

4-Arm PEG Thiol(1)/alkyne(3), MW 2k;

4-Arm PEG-COOH(3)/Azide(1), MW 10k;

4-arm PEG Phosphate(2)/Amine(2), MW 10k;

Other pairs of functional groups include:

Amine/Biotin,

Amine/Maleimide,

Amine/Azide,

Amine/Acrylamide,

Amine/Thiol,

Amine/Acid,

Amine/FITC,

Amine/Rhodamine,

Biotin/Maleimide,

Biotin/Azide,

Biotin/Acid,

Biotin/Thiol,

Thiol/Acid,

Maleimide/FITC.