Title:
A PROCESS FOR PREPARATION OF PHENYL CARBAMATE DERIVATIVE AND POLYMORPHIC FORMS THEREOF
Document Type and Number:
WIPO Patent Application WO/2013/179298
Kind Code:
A3
Abstract:
The present invention discloses a stable retigabine which comprises (d) mixture of crystalline modification Form -A and modification Form-B; or (e) mixture of crystalline modification Form-A and modification Form-C; or (f) mixture of crystalline modification Form-B and modification Form-C, wherein the mixture of crystalline modification in (a) or (b) or (c) doesn't convert to crystalline modification Form-A or modification Form-B or modification Form-C.
Inventors:
DWIVEDI SHRIPRAKASH DHAR (IN)
PATEL JAGDISH MAGANLAL (US)
SHAH NIRAJ SHYAMLAL (IN)
VINCHHI KISHORKUMAR MANEKLAL (IN)
PATEL JAGDISH MAGANLAL (US)
SHAH NIRAJ SHYAMLAL (IN)
VINCHHI KISHORKUMAR MANEKLAL (IN)
Application Number:
PCT/IN2013/000274
Publication Date:
February 20, 2014
Filing Date:
April 23, 2013
Export Citation:
Assignee:
CADILA HEALTHCARE LTD (IN)
International Classes:
C07C271/28; A61K31/27
Domestic Patent References:
| WO2013008250A2 | 2013-01-17 |
Foreign References:
| US6538151B1 | 2003-03-25 |
Attorney, Agent or Firm:
SUBRAMANIAM, Hariharan (Nataraj & AssociatesE-556, Greater Kailash II, New Delhi 8, IN)
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