CRYSTALLINE FORM OF ESZOPICLONE, ITS COMPOSITION, PREPARATION AND APPLICATION Russian patent published in 2013 - IPC C07D487/04 A61K31/4985 A61P25/20 

Abstract RU 2492171 C2

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention discloses crystalline form of S-zopicone with spectrum of powder X-ray diffraction with application of Cu-Ka radiation, with characteristic peaks, expressed under conditions 20 approximately at 11.08°, approximately 12.38°, approximately 15.86°, approximately 17.88°, approximately 19.98°C and approximately 20.58°, DSC-thermogram, on which peak is observed approximately at 207.7°C, and infrared spectrum of absorption (IR) with characteristic peaks approximately at 3078 cm-1, approximately 2942-2838 cm-1, approximately 2790 cm-1, approximately 1716 cm-1, approximately 1463 cm-1, approximately 1372 cm-1 and approximately 757 cm-1.

EFFECT: claimed are: method of preparation of crystalline form of eszopiclone, pharmaceutical preparation and its application in manufacturing medication for treatment of sleep disorder.

8 cl, 8 dwg, 10 ex

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RU 2 492 171 C2

Authors

Van Guochen

Ksju Ksjuehju

Dates

2013-09-10Published

2009-04-17Filed