PROBLEM TO BE SOLVED: To provide a glycolchitosan derivative by which a nano-size self-aggregate can be formed, wherein the glycolchitosan derivative has temperature-sensitivity and biodegradability and is suitable for use in a drug carrier; and to provide a method of producing the derivative.;SOLUTION: The glycolchitosan derivative is produced by acetylation reaction of glycolchitosan with an acetylating agent.;COPYRIGHT: (C)2012,JPO&INPIT
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