Crystalline forms of pyrroloquinoline quinone disodium salt
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United States of America Patent
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Jul 4, 2017
Grant Date -
Oct 15, 2015
app pub date -
Sep 10, 2013
filing date -
Nov 9, 2012
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Abstract
The present invention relates to crystalline forms of pyrroloquinoline quinone disodium salt. The present invention provides crystalline Form A and crystalline Form B of pyrroloquinoline quinone disodium salt, and the methods and uses for the preparation thereof. The X-ray powder diffraction patterns of crystalline Form A and crystalline Form B are as shown by FIG. 1 and FIG. 5, respectively. The crystalline forms of the present invention have low moisture absorption and high stability, as well as excellent use and storage performances.
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