PRODUCTION METHOD FOR REDUCED COENZYME Q10 FORM-II TYPE CRYSTAL OR CRYSTALLINE SOLID THEREOF

WIPO Patent Application WO/2022/202214

A1

The purpose of the present disclosure is to provide a production method that is for reduced coenzyme Q10 Form-II type crystals or a crystalline solid thereof and that enables excellent filtering ability of a slurry containing reduced coenzyme Q10 Form-II type crystals.　One embodiment of the present invention is a production method that is for reduced coenzyme Q10 Form-II type crystals or a crystalline solid thereof, and that comprises: adding reduced coenzyme Q10 Form-II type crystals as seed crystals to a mixture liquid containing reduced coenzyme Q10 and an alcohol; and precipitating reduced coenzyme Q10 Form-II type crystals in the mixture liquid after the seed crystals have been added. During the precipitation, within at least 80% or more of time of a period in which the formazin turbidity unit (FTU) changes from 1,000 to 10,000, the FTU change rate is maintained at at least 15 FTU/min.

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TANIZAKI SUBARU (JP)
ONO TADAO (JP)
HASHIMOTO TAKANORI (JP)

PCT/JP2022/009361

September 29, 2022

March 04, 2022

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KANEKA CORP (JP)

C07C41/40; C07C43/23; C07C50/28

WO2020045571A1	2020-03-05
WO2020067275A1	2020-04-02
WO2012176842A1	2012-12-27
WO2021161807A1	2021-08-19

HIRAKI & ASSOCIATES (JP)

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