Crystal form of an organic compound and process for the preparation thereof
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United States of America Patent
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Dec 29, 2015
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Jun 7, 2012
app pub date -
Aug 5, 2010
filing date -
Aug 5, 2009
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Abstract
The present invention relates to novel crystalline Form II of 17α-acetoxy-21-methoxy-11β-[4-N,N-dimethylaminophenyl]-19-norpregna-4,9-diene-3,20-dione, (also known as CDB-4124), processes for the preparation thereof and pharmaceutical compositions comprising it. Form II can be crystallized from different medium such as esters of C1-C4 alcohols and carboxylic acids, ketones, cyclohexane, acetonitrile, dimethylformamide, dimethyl sulfoxide, water and any mixture thereof.
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