Process for preparing crystalline form A of Lansoprazole

Process for preparing crystalline form A of Lansoprazole

The present invention relates to a process for preparing Crystalline Form A of Lansoprazole. Specifically, the present invention relates to a process for preparing highly pure Crystalline Form A of Lansoprazole in a large scale without any additional conversion step, even by using ethanol in which C...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEE SUNG JAE, OH SEONG SOO, MOON SEONG CHEOL, KANG DOO SUNG, SONG IN WOONG
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention relates to a process for preparing Crystalline Form A of Lansoprazole. Specifically, the present invention relates to a process for preparing highly pure Crystalline Form A of Lansoprazole in a large scale without any additional conversion step, even by using ethanol in which Crystalline Form B is easily formed.