NHS PEG

4arm PEG, -(CO(CH2)2COO-NHS)4, Mw 10,000   
4arm PEG, -(CO(CH2)3COO-NHS)4, Mw 5,000

Make to order

4arm PEG, -(CO(CH2)3COO-NHS)4, Mw 10,000   
4arm PEG, -(CO(CH2)3COO-NHS)4, Mw 20,000   
4arm PEG, -(CO(CH2)3COO-NHS)4, Mw 40,000  

Make to order

4arm PEG, -((CH2)5COO-NHS)4, Mw 10,000

Make to order

4arm PEG, -((CH2)5COO-NHS)4, Mw 20,000

Make to order

4arm PEG, -((CH2)5COO-NHS)4, Mw 40,000

Make to order