Pharmaceutically acceptable salt and crystal form of pyrrolo[2,3-d]pyridazin-7-one derivative and preparation method of medicinal salt and crystal form
A 3-d, medicinal salt technology, applied in the field of medicine and chemical industry, can solve problems such as crystal form research
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Embodiment 1
[0057] Embodiment 1: Compound A hydrochloride
[0058] Prepare hydrogen chloride solution for later use: pipette 0.1ml of concentrated hydrochloric acid, add 9.9ml of ethanol and shake well to prepare ethanol hydrochloric acid solution for later use;
[0059] Weigh free compound A (100mg), add 5ml of n-hexane, add 1.8ml of ethanol hydrochloric acid solution, heat and stir at 50°C, filter, wash with n-hexane, and dry. The XRPD pattern of the crystalline product is shown in figure 1 , its characteristic peak positions are shown in Table 1 below, and there is an endothermic peak at 173.8°C in its DSC spectrum.
[0060] Table 1
[0061]
[0062]
[0063] Experiment 1: Stability Study
[0064] The crystal form I of compound A hydrochloride was placed flat to investigate the stability of the samples under different temperature or / and humidity conditions. The sampling inspection period was 7 days, 14 days and February. The specific data are shown in Table 2:
[0065] Table 2...
Embodiment 2
[0068] Embodiment 2: Compound A hydrochloride
[0069] Compound A (100 mg) was added to 5 ml of tetrahydrofuran solution, 18 ul of concentrated hydrochloric acid was added, heated and stirred at 50° C., filtered, washed with tetrahydrofuran, and dried to obtain a solid. It was detected as the I crystal form of hydrochloride by XRPD.
Embodiment 3
[0070] Example 3: Form II of Compound A
[0071] Add compound A hydrochloride (60mg) into 0.6ml of methanol solution, stir to dissolve, add 0.3ml of water, heat up to 25°C, then cool down to 5°C at a rate of 10K / min, stir and crystallize, filter, and dry at 50°C Obtain solid sample, this crystalline product XRPD collection of patterns sees figure 2 , and its characteristic peak positions are shown in Table 3 below.
[0072] table 3
[0073] Peak number 2θ value [° or degrees] Relative Strength% 1 5.855 100 2 6.310 26.5 3 7.030 47.6 4 8.404 5.4 5 11.755 62.3 6 12.835 17.9 7 14.280 47.4 8 16.311 7.7 9 17.525 24 10 17.925 18.4 11 20.090 17.4 12 21.445 20.6 13 23.130 25 14 25.285 26.3 15 25.890 19.4
[0074] After the chloride ion content test, it does not contain chloride ions.
[0075] DSC detection shows that the XRPD spectrum of the sample does not change during the ...
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