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Methoxy-PEG-(CH2)2NHCO(CH2)2-MAL, Mw 2,000

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4arm PEG, -((CH2)2NHCO(CH2)2-MAL)4, Mw 5,000

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4arm PEG, -((CH2)2O-CO-p-C6H4-Hydroximoyl chloride)4, Mw 10,000

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4arm PEG, -((CH2)2O-CO-Norbornene)4, Mw 10,000

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4arm PEG, -((CH2)3NHCO-Norbornene)4, Mw 10,000

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4arm PEG, -((CH2)2-NH2)4, Mw 40,000

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4arm PEG, -((CH2)2-NH2)4, Mw 20,000

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4arm PEG, -((CH2)2-NH2)4, Mw 10,000
4arm PEG, -((CH2)2-NH2)4, Mw 5,000

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4arm PEG, -((CH2)3-NH2)4, Mw 5,000

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