Bifunctional Multi-Arm PEG

4-Arm PEG-X/Y

Bifunctional 4-Arm PEG reagents have two functional groups X/Y with 1:3 ratio or 2:2 ratio. We started offering this series of special reagents as customs synthesis with the following combinations. We are also listing some of these reagents as regular catalog products that are ready to ship overnight.

We offer three ratios for each pair of functional groups. 1:3, 2:2 and 3:1. An example is listed below.

Amine(3)/Acid(1) – 3 amine groups and 1 acid group

Amine(2)/Acid(2) – 2 amine groups and 2 acid group

Amine(1)/Acid(3) – 1 amine groups and 3 acid group

8-Arm PEG-X/Y

Bifunctional 8-Arm PEG reagents have two functional groups X/Y with 1:7 ratio or 4:4 ratio. We started offering this series of special reagents as customs synthesis with the following combinations. We are also listing some of these reagents as regular catalog products that are ready to ship overnight.

We offer three ratios for each pair of functional groups. 1:7, 4:4 and 7:1. Other ratios may be also offered. An example is listed below.

Amine(1)/Acid(7) – 1 amine group and 7 acid groups

Amine(4)/Acid(4) – 4 amine groups and 4 acid groups

Amine(7)/Acid(1) – 7 amine groups and 1 acid group

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