1,3-Diiodohydantoin compound and production method thereof

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate

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07897785

ABSTRACT:
The present invention provides a means which can inhibit release of I2in production or storage of 1,3-diiodohydantoin compound, and thereby solve decrease in purity of the compound and various problems caused by I2.The present invention provides a production method for 1,3-diiodohydantoin compound comprising a step to prepare a wet body containing a 1,3-diiodohydantoin compound, and (1) a step to dry the wet body by contacting the wet body with heated gas or (2) a step to lyophilize the wet body, a storage method for 1,3-diiodohydantoin compound comprising a step to store a 1,3-diiodohydantoin compound under a temperature condition of 15° C. or lower, and a 1,3-diiodohydantoin compound wherein content of released I2is 1% by mass or less.

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