A kind of cyclopropanecarboxamide derivative H crystal form and preparation method thereof
A technology of cyclopropanecarboxamide and derivatives, which is applied in organic chemical methods, drug combinations, bone diseases, etc., can solve problems such as unfavorable hygroscopicity and instability of cyclopropanecarboxamide derivatives, and achieve excellent high temperature stability, The effect of good bioavailability
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Embodiment 1
[0033] Embodiment 1 Preparation of cyclopropanecarboxamide derivative H crystal form
[0034] Weigh 500 mg of cyclopropanecarboxamide derivative raw material into a container, add 100 mL of ethanol (analytical grade) and N,N-dimethylformamide (analytical grade) 1:2 mixed solvent, suspend at 35°C for 48 hours, filter , Vacuum drying to obtain off-white powder. Its yield of weighing calculation is 56%.
Embodiment 2
[0035] Embodiment 2. Characterize cyclopropanecarboxamide derivative H crystal form by XRPD pattern
[0036] The measurement of the X-ray powder diffraction (XRPD) pattern is carried out using the Rigaku UltimaIV model combined multifunctional X-ray diffractometer, and the specific collection information is as follows: Cu anode (40kV, 40mA), scanning speed 20° / min, scanning range (2θ range )3~45°, scan step size 0.02, slit width 0.01. Samples were processed using glass slides pressed directly onto the test plate. Subsequent XRPD patterns all adopt similar measurement methods.
[0037] Determination of the XRPD spectrum of the cyclopropanecarboxamide derivative H crystal form prepared according to the method described in Example 1, at 2θ=9.341, 13.019, 14.2, 16.66, 17.201, 18.37, 18.901, 20.522, 20.82, 21.141, 21.759, 23.001, There are diffraction peaks at 23.441, 24.461, 25.059, 26, 26.539, 28.8, 29.661, and 33.657, such as figure 1 shown. The error range of 2θ value is ±0...
Embodiment 3
[0039] Example 3. Investigation of High Temperature Stability of Cyclopropanecarboxamide Derivative H Crystal Form
[0040] The cyclopropanecarboxamide derivative H crystal sample was placed in a 60°C oven, and after 5 days and 10 days, the samples were taken out for XRPD testing (such as figure 2 and Figure 5 Shown), in order to investigate the stability of the crystal form of the sample to temperature. The results show that the crystal form H sample is stable under high temperature conditions.
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