"a novel process for the preparation of amorphous form of tolvaptan"

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专利权人:

ENALTEC LABS PRIVATE LTD

发明人:

BOBBA VENKATA SIVAKUMAR,BOBBA VENKATA SIVAKUMAR,KODALI ESWARA RAO,KODALI ESWARA RAO,GIRISH BANSILAL PATEL,GIRISH BANSILAL PATEL,SANJAY DASHRATH VAIDYA,SANJAY DASHRATH VAIDYA,ALOK PRAMOD TRIPATHI,ALOK

申请号：

IN2093/MUM/2013

公开号：

IN2013MU02093A

申请日:

2013.06.20

申请国别(地区):

IN

年份:

2015

代理人:

摘要：

The present invention provides a novel process for the preparation of amorphous form of tolvaptan active pharmaceutical ingredient. The process comprises, providing a solution of tolvaptan active pharmaceutical ingredient in an organic solvent, removing solvent from the solution of tolvaptan active pharmaceutical ingredient by agitated thin film drying and isolating amorphous form of tolvaptan active pharmaceutical ingredient.

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