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$330.00

H2N-(CH2)3-O-PEG-(CH2)5-COOH, Mw 3,400


$132.00

Methoxy-PEG-(CH2)2-SH, Mw 10,000
Chemical Name: α-Mercaptoethyl-ω-methoxy, polyoxyethylene
CAS#: 134874-49-0

In stock

$88.00

8arm PEG, -(COO-pNP)8, Mw 40,000   


$484.00

Boc-NH(CH2)3-O-PEG-COO-NHS, Mw 2,000

In stock