Synthesis and Characterization of Compound I Calcium Salt Hydrate Form G
Example 11
Compound I calcium salt hydrate Form G was obtained via fast cooling of Compound I calcium salt hydrate Form A solution in EtOH:H2O (v:v, 90:10).
A. X-Ray Powder Diffraction:
XRPD was performed with a Panalytical X'Pert3 Powder XRPD on a Si zero-background holder. The 2 theta position was calibrated against a Panalytical Si reference standard disc. The XRPD diffractogram for Compound I calcium salt hydrate Form G is shown in FIG. 17 and summarized in Table 22.
TABLE 22
XRPD signals for crystalline Compound I
calcium salt hydrate Form G
XRPD Angle (degrees Intensity
Peaks2-Theta ± 0.2)%
15.9100.0
214.867.3
314.763.9
46.058.4
58.817.4
611.814.6
711.98.8
826.66.5
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US11873300B2. Crystalline forms of CFTR modulators (2024-01-16). Vertex Pharmaceuticals Incorporated [US]. Inventors: Yi Shi [US], Kevin J. Gagnon [US], Jicong Li [US], Jennifer Lu [US], Ales Medek [US], Muna Shrestha [US], Michael Waldo [US], Beili Zhang [US], Carl L. Zwicker [US], Corey Don Anderson [US], Jeremy J. Clemens [US], Thomas Cleveland [US], Timothy Richard Coon [US], Bryan Frieman [US], Peter Grootenhuis [US], Sara Sabina Hadida Ruah [US], Jason McCartney [US], Mark Thomas Miller [US], Prasuna Paraselli [US], Fabrice Pierre [US], Sara E. Swift [US], Jinglan Zhou [US].