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Researchers using X-ray powder diffraction (XRPD) and thermal analysis have identified three primary forms:

: Exhibits a unique "catameric" arrangement where carboxylic residues form one-dimensional hydrogen-bonded chains, winding around a short monoclinic axis. 3. Thermal Stability and Phase Conversion 54757.rar

: Form I can be quantitatively converted into Form II. 54757.rar

: These findings suggest that the manufacturing environment (heat and solvent choice) directly determines which form of the drug is produced. 4. Conclusion 54757.rar