Stearic acid derivatives and oleic acid derivatives of multi-arm polyethylene glycol
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United States of America Patent
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Feb 13, 2018
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Jun 1, 2016
filing date -
Dec 2, 2013
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Abstract
Disclosed are multi-arm polyethylene glycol derivatives having structure of formula I or formula VI. Compared with straight chain polyethylene glycol, multi-arm polyethylene glycol has a plurality of terminal groups, thus has a plurality of introducing points of functional groups and can support a plurality of reactive terminal groups, thereby enabling multi-arm polyethylene glycol to have more flexibility and wider range of application.
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