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8arm PEG, -(CO(CH2)2COO-NHS)8, Mw 15,000

Mercapto-PEG-Carboxic Acid　α-5-Carboxypentyl-ω-2-mercaptoehyloxy, polyoxyethylene　Mw 2,000

Mercapto-PEG-Amine　α-Aminopropyl-ω-2-mercaptoehyloxy, polyoxyethylene　MW 2,000

2arm branched PEG, -（CH₂）₃NHCO(CH₂)₅-MAL, Mw 40,000

α-5-Carboxypentyl-ω-3-[N-(9-fluorenylmethoxycarbonyl) amino]propyloxy, polyoxyethylene hydrochloride salt (MW 2,000)

NHS-OCOO-PEG-COO-NHS, Mw 40,000

NHS-OCOO-PEG-COO-NHS, Mw 10,000

α-{4-[6-methyl-8-({[(4-nitrophenoxy)carbonyl]oxy}methyl)-4H-benzo[d][1,3]dioxin-2-yl]phenyl}-ω-methoxy, poly(oxyethylene)　MW: 20000

Molecular weight: 20000

Molecular weight: 20000