Title:
CRYSTAL OF THIENOPYRIMIDINE DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/2011/152411
Kind Code:
A1
Abstract:
Crystals are obtained by heating an aqueous suspension of 2-(3,4-dichlorobenzyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid. Novel crystals are obtained by adjusting the heating temperature and/or duration.
Inventors:
HAYASHI HIROYUKI (JP)
NAKAGAWA TAKAYOSHI (JP)
MIYAZAKI KOICHI (JP)
NAKAGAWA TAKAYOSHI (JP)
MIYAZAKI KOICHI (JP)
Application Number:
PCT/JP2011/062513
Publication Date:
December 08, 2011
Filing Date:
May 31, 2011
Export Citation:
Assignee:
ASKA PHARM CO LTD (JP)
HAYASHI HIROYUKI (JP)
NAKAGAWA TAKAYOSHI (JP)
MIYAZAKI KOICHI (JP)
HAYASHI HIROYUKI (JP)
NAKAGAWA TAKAYOSHI (JP)
MIYAZAKI KOICHI (JP)
International Classes:
A61K31/519; C07D495/04; A61P3/10; A61P7/02; A61P9/10; A61P9/12; A61P11/00; A61P13/02; A61P13/04; A61P13/08; A61P13/10; A61P15/10; A61P25/00; A61P25/28
Domestic Patent References:
| WO2006135080A1 | 2006-12-21 | |||
| WO2006135080A1 | 2006-12-21 |
Foreign References:
| JP2010125362A | 2010-06-10 |
Other References:
YUKI KAGOBUTSU, KESSHO SAKUSEI HANDBOOK, 25 July 2008 (2008-07-25), pages 57 - 59
See also references of EP 2594570A4
See also references of EP 2594570A4
Attorney, Agent or Firm:
TAKASHIMA, HAJIME (JP)
Takashima 1 (JP)
Takashima 1 (JP)
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Claims: