Polymorphic Forms of PI3K Inhibitor Salt for Bioavailability

The patent applies parameter changes by developing multiple polymorphic forms (different crystal structures) of the hydrochloride salt, each with distinct physical properties such as solubility, melting point, and stability. These parameter variations in the crystal lattice enable optimization of bioavailability while providing different manufacturing options to balance complexity requirements.

The patent utilizes parameter changes by identifying and characterizing multiple polymorphic forms with different stability profiles. Each polymorph exhibits distinct thermal, mechanical, and chemical stability characteristics, allowing selection of the most stable form for long-term storage and handling, thereby improving overall composition stability.

The patent employs spectroscopic methods (NMR, IR, Raman) and diffraction techniques (XRPD, single crystal X-ray crystallography) to characterize polymorphic forms. These analytical techniques replace complex manual characterization procedures, enabling automated identification and differentiation of polymorphs through their unique spectral and diffraction fingerprints, thus improving manufacturability despite increased analysis requirements.

The patent develops solvate forms where solvent molecules act as intermediaries in the crystal lattice, forming stable complexes that enhance bioavailability. These solvates can be purified through controlled crystallization processes where the solvent of choice is incorporated into the crystal structure, and subsequent removal or exchange of solvents provides a purification mechanism that balances bioavailability improvement with manufacturing feasibility.