论著
冯茹 孙宇鹏 王琳 童元峰 吴松 王琰 蒋晔
2011, 46(18): 1436-1440.
目的 建立HPLC/DAD/MS法同时测定盐酸昂丹司琼合成中可能存在的主要7种微量杂质。方法 采用高效液相色谱法,色谱柱:Allsphere Cyano (CN)柱,4.6 mm×250 mm,5 μm;流动相:乙腈-0.02 mol·L-1醋酸铵水溶液梯度洗脱,梯度洗脱条件如下:0 min, 18∶82;10 min,19∶81;12 min,60∶40;32 min,60∶40;32.1 min,18∶82;40 min,18∶82;柱温:30 ℃;流速:0.8 mL·min-1;进样量:10 μL;检测波长:266 nm。HPLC/DAD/MS条件 离子源:APCI;扫描模式:正离子。结果 盐酸昂丹司琼及其7种杂质9-甲基-3-(二甲胺基)甲基-1,2,3,9-四氢-4H-咔唑-4-酮(4H-carbazol-4-one,3-[(dimethylamino) methyl]-1,2,3,9-tetrahydro-9-methyl-,A1)、9-甲基-3-(二甲胺基)甲基-1,2,3,9-四氢-4H-咔唑-4-酮(4H-carbazol-4-one,3-[(dimethylamino)methyl]-1,2,3,9-tetrahydro-,A2)、1,2,3,9-四氢-9-甲基-4H-咔唑酮(4H-carbazol-4-one,1,2,3,9-tetrahydro-9-methyl-,A3)、1,2,3,9-四氢-4H-咔唑酮(4H-carbazol-4-one,1,2,3,9-tetrahydro-,A4)、1,2,3,9-四氢-9-甲基-3-亚甲咔唑酮(4H-carbazol-4-one,1,2,3,9-tetrahydro-9-methyl-3-methylene-,A5)、1,2,3,9-四氢-3-(1H-咪唑基-1-甲基)-9-甲基-4H-咔唑酮(4H-carbazol-4-one,1,2,3,9-tetrahydro-3-[(1H-imidazol-1-yl)methyl]-9-methyl-,Z1),1,2,3,9-四氢-3-[(2-甲基-1H-咪唑-1-)-4H-咔唑酮(4H-carbazol-4-one,1,2,3,9-tetrahydro-3-[(2-methyl-1H-imidazol-1-yl)methyl]-,Z2)的线性范围分别为:0.009 7~1.94 μg(r=0.999 7),0.010 4~2.08 μg(r=0.999 7),0.009 8~1.96 μg(r=0.999 9),0.009 5~1.90 μg(r=0.999 8),0.010 5~2.10 μg(r=0.999 8),0.009 6~1.92 μg(r=0.999 8),0.010 4~2.08 μg(r=0.999 8),0.010 5~2.10 μg(r=0.999 7);最低检测限分别为0.29,0.31,0.49,0.10,0.10,0.29,0.31,0.16 ng;定量限分别为0.97,1.04,1.47,0.29,0.32,0.96,1.04,0.52 ng。结论 盐酸昂丹司琼及其7种微量杂质分离良好;对其两批制剂及一批原料药进行检测,其中原料药中检出杂质A1,A3,A5含量超过0.11%。该方法简单、准确、可靠、具有较广泛的适用性,可以作为盐酸昂丹司琼及其7种可能的微量杂质的质量控制方法。