Derivatives of hyaluronan

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

Reexamination Certificate

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C536S055300, C536S054000, C536S123100, C536S124000, C514S054000

Reexamination Certificate

active

07049434

ABSTRACT:
The invention describes new hyaluronan derivatives where the hydroxyl groups are esterified or carbamoylated in amounts ranging from 0.01% to 100% and the carboxyl groups are either totally or partially esterified with alcohols or are in the form of salt.

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T.C. Laurent et al., “Fractionation of Hyaluronic Acid—The Polydispersity of Hyaluronic Acid from the Bovine Vitreous Body,” Biochim. Biophys. Acta, 42, pp. 476-485 (1960).
R. Khan et al., “Selective acetylation reactions of hyaluronic acid benzyl ester derivative,”Carbohydrate Research 306, pp. 137-146 (1998).

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