Preparation and Characterization of Compound I Calcium Salt 1,2-Dimethoxyethane Solvate Form B
Example 23
Compound I calcium salt 1,2-dimethoxyethane solvate Form B was obtained via slurry of Compound I calcium salt hydrate Form A in 1,2-dimethoxyethane at room temperature.
A. X-Ray Powder Diffraction
XRPD was performed with a Panalytical X'Pert3 Powder XRPD on a Si zero-background holder. The 20 position was calibrated against a Panalytical Si reference standard disc. The XRPD diffractogram for Compound I calcium salt 1,2-dimethoxy ethane solvate Form B is shown in FIG. 32 and summarized in Table 40.
TABLE 40
Compound I calcium salt
1,2-dimethoxyethane solvate Form B
Angle (degrees
XRPD Peaks2-Theta ± 0.2)Intensity %
14.6100.0
27.743.7
39.130.4
413.727.4
512.123.7
622.920.6
710.119.2
816.518.0
917.014.4
1021.913.6
1119.911.8
1220.711.6
1315.110.7
1423.810.4
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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].