| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a novel crystalline form of 4-[6-acetyl-3-[3-(4-acetyl-3-hydroxy-2-propylphenylthio)propoxy]-2-propylphenoxy]butyric acid, useful for allergic disease such as bronchial asthma.SOLUTION: In a pharmaceutical composition, at least about 90% of a compound of formula (1) is polymorphic form A, as defined by PXRD peak heights around 9° (2θ), and does not substantially contain other polymorphic forms, wherein the compound is particularly orthorhombic crystal.</p> |
