Bifunctional Multi-Arm PEG Products

Our Multi-Arm PEG Products

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