Iptakalim hydrochloride B crystal form and preparation method thereof
A technology of crystal form and hydrochloric acid, applied in the field of medicine, can solve the problems of easy crystal transformation, unfavorable drug storage and transportation, instability and so on
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[0022] In the specification and claims of the present application, unless otherwise specified, the scientific and technical terms used herein have the meanings commonly understood by those skilled in the art. However, for a better understanding of the present invention, definitions and explanations of some related terms are provided below. In addition, when the definitions and explanations of terms provided in this application are inconsistent with the meanings commonly understood by those skilled in the art, the definitions and explanations of terms provided in this application shall prevail.
[0023] The melting endothermic peaks of the DSC of the present invention are double peaks, the peak that appears first is peak 1, and the second peak is peak 2. The peak value of peak 1: 233.6 ° C, the starting point: 232.0 ° C, the ending point: 235.3 ° C; peak 2 Peak value: 244.5°C, start point: 240.8°C, end point: 249.6°C.
[0024] The crystal form B of etakaline hydrochloride prov...
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