Title:
CRYSTAL OF 4,4'-BIS(1,1-BIS(4-HYDROXY-3-METHYLPHENYL)ETHYL)BIPHENYL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/234158
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an isolate of 4,4'-bis(1,1-bis(4-hydroxy-3-methylphenyl)ethyl)biphenyl in a form suitable for industrial production. The solution is to provide a crystal of 4,4'-bis(1,1-bis(4-hydroxy-3-methylphenyl)ethyl)biphenyl.
Inventors:
KIMURA RYO (JP)
NISHIKAWA DAI (JP)
NISHIKAWA DAI (JP)
Application Number:
PCT/JP2023/019450
Publication Date:
December 07, 2023
Filing Date:
May 25, 2023
Export Citation:
Assignee:
HONSHU CHEMICAL IND (JP)
International Classes:
C07C39/15; C07C37/84
Domestic Patent References:
| WO2022075120A1 | 2022-04-14 |
Foreign References:
| JP2022080817A | 2022-05-30 | |||
| JP2022074048A | 2022-05-17 | |||
| JP2019161183A | 2019-09-19 | |||
| JP2006515016A | 2006-05-18 |
Other References:
HIRAYAMA NORIAKI: "Handbook of organic compounds crystallization - principles and know-how", 1 January 2008, XX , JP , ISBN: 978-4-621-07991-1, article HIRAYAMA, NORIAKI: "Passages; Organic Compound Crystal Production Handbook", pages: 17 - 51, 57-65, XP009536842
ADMINISTRATION MANAGER OF DRUG SAFETY AND AVAILABILITY OF MINISTRY OF HEALTH, LABOUR AND WELFARE: "About guidelines of residual solvents for pharmaceutical products", PHARMACEUTICAL AFFAIRS BUREAU NOTIFICATION, PHARMACEUTICAL AFFAIRS BUREAU, JP, no. 307, 30 March 1998 (1998-03-30), JP, pages 1 - 11, XP009551349
ADMINISTRATION MANAGER OF DRUG SAFETY AND AVAILABILITY OF MINISTRY OF HEALTH, LABOUR AND WELFARE: "About guidelines of residual solvents for pharmaceutical products", PHARMACEUTICAL AFFAIRS BUREAU NOTIFICATION, PHARMACEUTICAL AFFAIRS BUREAU, JP, no. 307, 30 March 1998 (1998-03-30), JP, pages 1 - 11, XP009551349
Attorney, Agent or Firm:
YAMADA, Yasuyuki et al. (JP)
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