NDLI: Crystal forms of naproxen.

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Crystal forms of naproxen.

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Crystal forms of naproxen.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Song, Jung-Soon Sohn, Young-Taek
Description	Author Affiliation: Song JS ( College of Pharmacy, Duksung Women's University, Seoul, Korea.)
Abstract	The objective of this work was to investigate the existence of polymorphs and pseudopolymorphs of naproxen and the transformation of crystal forms. Four crystal forms of naproxen have been isolated by recrystallization and characterized by differential scanning calorimetry, powder X-ray diffractometry and thermogravimetric analysis. The differential scanning calorimetry and powder X-ray diffractometry patterns of the four crystal forms were different respectively. In the dissolution studies in pH 6.8 ± 0.05 buffer equilibrated at 37 ± 0.5°C, the solubility of four crystal forms was similar (within the error range). After storage of 1 month at 0% RH (silica gel, 20°C), 52% RH (saturated solution of Na(2)Cr(2)O(7.2)H(2)O/20°C) and 95% RH (saturated solution of Na(2)HPO(4)/20°C), Form 2 and Form 4 were transformed to Form 1, but Form 3 and Form 1 were not transformed and they were shown to have a good physical stability at room temperature for 1 month.
File Format	HTM / HTML
ISSN	02536269
Issue Number	1
Volume Number	34
e-ISSN	19763786
Journal	Archives of Pharmacal Research
Language	English
Publisher	Springer
Publisher Date	2011-01-01
Publisher Place	Korea (South)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Pharmacology Anti-inflammatory Agents, Non-steroidal Chemistry Naproxen Calorimetry, Differential Scanning Crystallization Drug Stability Drug Storage Humidity Hydrogen-ion Concentration Solubility Temperature Thermogravimetry X-ray Diffraction Journal Article
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Drug Discovery Molecular Medicine

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