Characterization of pharmaceutical solvates by combined thermogravimetric and infrared analysis.

Autor: Rodriguez C; Bristol-Myers Squibb Pharmaceutical Research Institute, New Brunswick, NJ 08903, USA., Bugay DE
Jazyk: angličtina
Zdroj: Journal of pharmaceutical sciences [J Pharm Sci] 1997 Feb; Vol. 86 (2), pp. 263-6.
DOI: 10.1021/js960286z
Abstrakt: The combined physical analytical technique of thermogravimetric and infrared analysis (TG/IR) is described for the investigation of pharmaceutical solids. TG/IR provides an unequivocal identification of the volatile content of a pharmaceutical solid. In the case of pharmaceutical solvates, TG/IR provides identification of the evolved gas from the crystalline solid. Variable temperature X-ray diffraction and differential scanning calorimetry techniques provide the required information to ascertain whether the evolved gas was due to a solvent incorporated into the crystal lattice or physically adsorbed onto the solid. This work illustrates three examples of TG/IR as utilized in a multidisciplinary approach to the physical characterization of pharmaceutical solids.
Databáze: MEDLINE