Crystalline form of ertapenem sodium and preparation method therefor
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United States of America Patent
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Apr 21, 2015
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Oct 24, 2013
app pub date -
Dec 22, 2011
filing date -
Dec 31, 2010
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Abstract
Provided is a crystalline form E of ertapenem sodium. Further provided is a method for preparing a crystalline form E of ertapenem sodium, characterized by using an aqueous ertapenem sodium solution at a low concentration as a raw material. The crystalline form E can be easily filtered and dried, the properties in the drying process are stable, and the purity of the crystal is high and can be up to 98.5% or higher.
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