8-Arm PEG-COOH (MW 40000)
https://www.aat-array.com/shop/cell25sk34373-8-arm-peg-cooh-mw-40000-86771
https://www.aat-array.com/web/image/product.template/86771/image_1920?unique=5b4cca8
8-Arm PEG-COOH (MW 10000) is a compound composed of PEG units and carboxyl (-COOH) groups, which can be used for dr_ug delivery.
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