The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2009
Filed:
May. 24, 2007
Venkateswarlu Akella, Hyderabad, IN;
Shanavas Alikunju, Secunderabad, IN;
Ajaya Kumar Reka, Hyderabad, IN;
Ramesh Mullangi, Hyderabad, IN;
Raju Sirisilla, Hyderabad, IN;
Subrahmanyam Duvvuri, Hyderabad, IN;
Sriram Rajagopal, Chennai, IN;
Venkateswarlu Akella, Hyderabad, IN;
Shanavas Alikunju, Secunderabad, IN;
Ajaya Kumar Reka, Hyderabad, IN;
Ramesh Mullangi, Hyderabad, IN;
Raju Sirisilla, Hyderabad, IN;
Subrahmanyam Duvvuri, Hyderabad, IN;
Sriram Rajagopal, Chennai, IN;
Dr. Reddy's Laboratories Limited, Hyderabad, IN;
Dr. Reddy's Laboratories, Inc., Bridgewater, NJ (US);
Abstract
A crystalline form of 5(S)-(2'-hydroxyethoxy)-20(S)-camptothecin diastereoisomer of 5(RS)-(2′-hydroxyethoxy)-20(S)-camptothecin is described that is characterized by having an X-ray powder diffraction pattern comprising one or more peak intensities expressed in degrees 2θ that are selected from the group consisting of 7.2±0.1, 9.4±0.1, 11.02±0.1, 12.00±0.1, 14.54±0.1, 15.2±0.1, 18.92±0.1, 21.86±0.1, 22.74±0.1 and 26.42±0.1. Methods of making and using the compound are also described.