| 摘要 |
<p>Crystals of 6-[4-(4-pyridylamino)phenyl]-4, 5-dihydro -3(2H)-pyridazinone hydrochloride trihydrate useful as a remedy for cardiac failure, etc.; and a remedial composition containing the crystals as the active ingredient. When analyzed, for example, by X-ray powder diffractometry, the crystals have characteristic absorption peaks at 12.9 (±0.2°) and 19.0 (±0.2°) (2υ, degrees).</p> |
