Modeling and prediction of cocrystal phase diagrams.
In this paper, a new approach to model cocrystal phase diagrams is presented. Starting from an initial set of data, the phase diagram is obtained from discontinuous isoperibolic thermal analysis (DITA) and basic thermodynamic data (enthalpies and solubilities). The solubility product constant may then be determined. Since this constant is solvent independent, extrapolation to other solvents is possible. Application of this technique to an active pharmaceutical ingredient and glutaric acid demonstrates good agreement between calculated and experimental data.
Ainouz
Abigail
A
Sanofi-aventis, Research and Development, Physical Quality, 94403 Vitry-sur-Seine, France.
Authelin
Jean-René
JR
Billot
Pascal
P
Lieberman
Harvey
H
D003460:Crystallization; D005079:Excipients / Q000737:chemistry; D005977:Glutarates / Q000737:chemistry*; D008956:Models, Chemical; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D044367:Phase Transition; D012995:Solubility; D012997:Solvents / Q000737:chemistry; D013816:Thermodynamics
D005079:Excipients; D005977:Glutarates; D004364:Pharmaceutical Preparations; D012997:Solvents; C035736:glutaric acid