Title:
METHOD FOR PULVIRIZING TO FINE POWDER
Document Type and Number:
WIPO Patent Application WO/2000/064875
Kind Code:
A1
Abstract:
A method for pulvirizing (E)-4-[2-[2-[N-acetyl-N-(4-methoxybenzenesulfonyl)amino]phenyl]ethenyl]pyridine-1-oxide to a fine powder, characterized as pulvirizing it by means of an open-circuit grinding machine, for example, to a powder which has an average particle diameter in the range of 1 to 25 $g(m)m and contains particles having a particle diameter of 50 $g(m)m or more in an amount of 2 % or less. The method can be used for pulvirizing the compound to a fine powder while maintaining the crystal form of the compound.
Inventors:
YUKI TETUO (JP)
WATANABE SHUJI (JP)
KUDO HITOSHI (JP)
WATANABE SHUJI (JP)
KUDO HITOSHI (JP)
Application Number:
PCT/JP2000/002616
Publication Date:
November 02, 2000
Filing Date:
April 21, 2000
Export Citation:
Assignee:
NIPPON SHINYAKU CO LTD (JP)
YUKI TETUO (JP)
WATANABE SHUJI (JP)
KUDO HITOSHI (JP)
YUKI TETUO (JP)
WATANABE SHUJI (JP)
KUDO HITOSHI (JP)
International Classes:
A61J3/02; A61K9/14; A61K9/16; A61K31/4409; A61K31/4412; A61P35/00; C07D213/89; (IPC1-7): C07D213/89; A61J3/02; A61K31/4409; A61P35/00
Foreign References:
| EP0754682A1 | 1997-01-22 |
Other References:
See also references of EP 1174427A4
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