PHARMACEUTICAL PREPARATIONS CONTAINING AMINOBENZENE-SULFONIC ACID DERIVATIVES AS THE ACTIVE INGREDIENT
申请人:Mitsubishi Pharma Corporation
公开号:EP1419775A1
公开(公告)日:2004-05-19
A stable pharmaceutical preparation containing an aminobenzenesulfonic acid derivative represented by the following formula (I) known as a therapeutic agent for cardiac insufficiency:
or a salt thereof, or a hydrate thereof or a solvate thereof as an active ingredient, wherein each production of substance A having a retention time of about 6.4 minutes in a high performance liquid chromatography, substance B having a retention time of about 15.6 minutes in the high performance liquid chromatography, and substance C having about 22.8 minutes in the high performance liquid chromatography is substantially suppressed, wherein said high performance liquid chromatography is performed at a controlled flow rate for elution so as to give a retention time of about 7 minutes of said active ingredient by using an ultraviolet absorptiometer at 220 nm, an octylsilylated silica gel packed column (4 mm x 250 mm) at 40°C, and a mobile phase prepared by dissolving 7.8 g of sodium dihydrogenphosphate dihydrate in 1000 mL of a mixture of water/acetonitrile (6:1) after said pharmaceutical preparation is extracted with a diluent prepared by dissolving 7.8 g of sodium dihydrogenphosphate dihydrate in 1000 mL of a mixture of water/acetonitrile (6:1) and adjusting a pH to 7.0 with addition of 8 mol/L sodium hydroxide solution.
一种稳定的药物制剂,包含下式(I)所代表的氨基苯磺酸衍生物作为治疗心力衰竭的治疗剂:或其盐、或其水合物、或其溶剂化物作为活性成分。其中,通过高效液相色谱法,使用220nm的紫外吸收计,在40°C下使用一个八氧基硅烷化硅胶填充柱(4mm x 250mm)和由将7.8克二氢磷酸钠二水合物溶解在1000毫升水/乙腈混合物(6:1)中制备的流动相,在控制的洗脱流速下,使得该活性成分的保留时间约为7分钟,且实质上抑制了保留时间约为6.4分钟的A物质、保留时间约为15.6分钟的B物质和保留时间约为22.8分钟的C物质。在制备该药物制剂后,使用将7.8克二氢磷酸钠二水合物溶解在1000毫升水/乙腈混合物(6:1)中制备的稀释剂,并加入8摩尔/升的氢氧化钠溶液调节pH至7.0后进行提取。