Abstract
TGA-DTA plays a central role in the strategy outlined for early evaluation of the solid state forms available to pharmaceutical new chemical entities. At this early stage of development, compound and time are typically at a premium, so a successful strategy requires making the best possible use of the materials and time available. In addition, because of time and compound limitations, the goal of a solid state investigation is focused upon early stage objectives rather than development of a complete understanding of all available solid state forms. The TGA-DTA is well suited to addressing these needs.
Issue Section:
Research Papers
References
1.
Giron
, D.
, “Thermal Analysis and Calorimetric Methods in the Characterisation of Polymorphs and Solvates
,” Thermochimica Acta
0040-6031 https://doi.org/10.1016/0040-6031(94)01953-E, Vol. 248
, 1995
, pp. 1
-59
.2.
Polymorphism in Pharmaceutical Solids
, Marcel
Dekker
and H. G.
Brittain
, Eds., New York
, 1999
.3.
Garti
, N.
and Tibika
, F.
, “Habit Modifications of Nitrofurantoin Crystallized from Formic Acid Mixtures
,” Drug Development and Industrial Pharmacy
0363-9045, Vol. 6
, No. 4
, 1980
, pp. 379
-398
.4.
Marshall
, P. V.
and York
, P.
, “Crystallisation Solvent Induced Solid-State and Particulate Modifications of Nitrofurantoin
,” International Journal of Pharmaceutics
0378-5173, Vol. 55
, 1989
, pp. 257
-263
.5.
Pienaar
, E. W.
, Caira
, M. R.
, and Lötter
, A. P.
, “Polymorphs of Nitrofurantoin. I. Preparation and X-Ray Crystal Structures of Two Monohydrated Forms of Nitrofurantoin
,” Journal of Crystallographic and Spectroscopic Research
0277-8068, Vol. 23
, No. 9
, 1993
, pp. 739
-744
.6.
Caira
, M. R.
, Pienaar
, E. W.
, and Lötter
, A. P.
, “Polymorphism and Pseudopolymorphism of the Antibacterial Nitrofurantoin
,” Mol. Cryst. Liq. Cryst.
1542-1406, Vol. 279
, 1996
, pp. 241
-264
.7.
Morris
, K. R.
, “Structural Aspects of Hydrates and Solvates
,” Polymorphism in Pharmaceutical Solids
, Marcel
Dekker
and H. G.
Brittain
, Eds., New York
, 1999
, pp. 125
-182
.8.
Redman-Furey
, N.
and Collins
, W.
, “Thermoanalytical Characterization of Pharmaceutical Materials: Small Molecule Applications
,” American Pharmaceutical Review
, Vol. 5
No. 1
, 2002
, pp. 102
-107
.9.
Dicks
, M. L.
, Parsons
, D. M.
, and Redman-Furey
, N. L.
, “Concurrent Use of Thermal Analysis and X-Ray Powder Diffraction to Characterize Hydration States
,” Proceedings of the 30th North American Thermal Analysis Society Conference
, B&K Publishing
, K. J.
Kociba
, Ed., 2002
, pp. 197
-202
.
This content is only available via PDF.
All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of ASTM International.
You do not currently have access to this content.