Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon accessible with the process

Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon accessible with the process

Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia. Also provided are processes for making Forms I, II, and V using precipitation methods.

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Feher, Erika, Korodi, Ferenc, Singer, Claude, Magyar, Erika
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia. Also provided are processes for making Forms I, II, and V using precipitation methods.