Molecular State of Methyl p-Hydroxybenzoate in the Solid Dispersion Prepared by Grinding with α-Cyclodextrin
-
- OGUCHI Toshio
- Faculty of Pharmaceutical Sciences, Chiba University
-
- TERADA Katsuhide
- Faculty of Pharmaceutical Sciences, Chiba University
-
- YAMAMOTO Keiji
- Faculty of Pharmaceutical Sciences, Chiba University
-
- NAKAI Yoshinobu
- Faculty of Pharmaceutical Sciences, Chiba University
Search this article
Abstract
The molecular interaction in a ground mixture of α-cyclodextrin (α-CD) and methyl p-hydroxybenzoate (MPHB) has been studied as a function of the mixing molar ratio. The states of MPHB molecules were investigated by means by powder X-ray diffraction, differential scanning calorimetry measurement and the determination of remaining MPHB after sublimation. The results indicated that in the ground mixture the MPHB molecules could exist in a mono-molecular dispersed state in the hydrogen bonding network of α-CD as well as in the α-CD cavity. It was suggested that two types of crystalline MPHB, fine crystals embedded in the α-CD matrix and intact crystals, were also present in the ground mixture of molar ratio 5 (MPHB/α-CD) or above.
Journal
-
- Chemical & pharmaceutical bulletin
-
Chemical & pharmaceutical bulletin 37 (7), 1886-1888, 1989-07-25
The Pharmaceutical Society of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1570572702508068224
-
- NII Article ID
- 110003627882
-
- NII Book ID
- AA00602100
-
- ISSN
- 00092363
-
- Text Lang
- en
-
- Data Source
-
- CiNii Articles