Amorphous Zaleplon And Methods For Preparing

Abstract: The present invention relates to novel amorphous zaleplon and process for the preparation thereof. Particularly, present invention provides novel amorphous zaleplon in combination with a pharmaceutically acceptable carrier. Amorphous zaleplon of the present invention is characterized by its X-ray powder diffraction (XRPD) pattern substantially in accordance with Fig. 1. The present invention further provides a process for the preparation of novel amorphous zaleplon in combination with a pharmaceutically acceptable carrier. The process includes removing the solvent from a solution containing zaleplon in combination with a pharmaceutically acceptable carrier, in an organic solvent, such as using distillation under vacuum, spray drying, or an Ultrafilm agitated thin film drier (ATFD).

Patent Information

Application #

Filing Date

09 December 2005

Publication Number

14/2008

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Applicants

DR. REDDY'S LABORATORIES LIMITED

DR REDDY'S LABORATORIES LIMITED 7-1-27 AMEERPET HYDERABAD ANDHRA PRADESH

Inventors

1. RANGINENI SRINIVASULU

MACHINENIPALLY VILLAGE YENMENBETLA POST KOLLAPUR MANDAL MAHABUBNAGAR DISTRICT

2. BOMMAREDDY SIVAKUMAR REDDY

39-8-19 B.S REDDY ROAD LABBIPET VIJAYAWADA ANDHRA PRADESH

3. SUDEEP KUMAR AGARWAL

PLOT NO A 1/8 LOKMANYA HOUSING SOCIETY ROHINIPURAM RAIPUR CHHATTISGARH

4. GADE SRINIVAS REDDY

PLOT NO 4 FLAT NO 202 VIVEKANANDA ENCLAVE SHANTHI NAGAR BAGH E AMEERI KUKATPALLY HYDERABAD ANDHRA PRADESH

Specification

Documents

Application Documents

#	Name	Date
1	1807-CHE-2005 FORM-18 21-10-2009.pdf	2009-10-21
1	1807-CHE-2005_EXAMREPORT.pdf	2016-07-02
2	1807-che-2005-correspondnece-others.pdf	2011-09-03
2	1807-che-2005-form 3.pdf	2011-09-03
3	1807-che-2005-description(provisional).pdf	2011-09-03
3	1807-che-2005-form 1.pdf	2011-09-03
4	1807-che-2005-drawings.pdf	2011-09-03
5	1807-che-2005-description(provisional).pdf	2011-09-03
5	1807-che-2005-form 1.pdf	2011-09-03
6	1807-che-2005-correspondnece-others.pdf	2011-09-03
6	1807-che-2005-form 3.pdf	2011-09-03
7	1807-CHE-2005 FORM-18 21-10-2009.pdf	2009-10-21
7	1807-CHE-2005_EXAMREPORT.pdf	2016-07-02