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1.
目的建立鸡冠花中槲皮素、木犀草素和山柰酚的含量测定方法。方法反相高效液相色谱法,色谱柱ZORBAX SB-C18(150mm×4.6mm,5μm);检测波长360nm;甲醇-0.2%磷酸(45:55)为流动相;柱温30℃;流速1.0mL·min^-1。结果槲皮素、木犀草素和山柰酚的回归曲线分别为:Y=1504.412X+9.9756,Y=1991.745X+8.6051,Y=567.591X+2.5397,它们分别在5.5×10^-2~19.3×10^-2mg·L^-1,4.6×10^-2~16.1×10^-2mg·L,12.6×10^-2~43.9×10^-2mg·L^-1范围内线性关系良好,相关系数r=0.99992~0.99998,加样回收率分别为94.68%,91.03%和103.08%,RSD分别为0.35%,1.01%和0.55%。样品分别含槲皮素、木犀草素和山柰酚0.176,0.262和0.105mg·g^-1。结论方法简便可行,重复性好,数据及结果可靠。  相似文献   

2.
目的:建立一种快速测定硫酸阿托品的电化学发光分析新方法。方法:基于硫酸阿托品对二联吡啶钌在铂电极上的电致发光信号有增敏作用,与毛细管电泳结合,建立一种快速、灵敏、准确的测定制剂中硫酸阿托品含量的方法。结果:在优化的实验条件下,硫酸阿托品在1.0×10^-4~1.0×10^-6mol·L^-1范围内呈良好线性(r=0.9978);检出限(3σ)为3.0×10^-7mol·L^-1,回收率为87%~91%,RSD小于5%。峰高和迁移时间的RSD分别为4.3%和1.2%(n=6)。结论:本法与高效液相色谱法相比,具有检出限低和线性范围宽的优点,可用于维U颠茄铝胶囊的质量控制及相关药物的含量检测。  相似文献   

3.
HPLC法测定盐酸左旋咪唑糖浆的含量   总被引:1,自引:0,他引:1  
目的:采用高效液相色谱法测定盐酸左旋咪唑糖浆的含量。方法:采用Agilent TC—C18色谱柱(4.6mm×150mm,5μm);以0.05mol·L^-1磷酸二氢钾溶液(二乙胺调节pH7.0)-乙腈(60:40)为流动相;流速1.0mL·min^-1;检测波长为215nm;柱温:室温。结果:盐酸左旋咪唑线性范围为5.14~25.70μg·mL^-1(r=0.9998),平均回收率(n=6)为98.3%,RSD为0.56%。结论:本方法简便、准确、重现性好,可用于测定盐酸左旋咪唑糖浆的含量。  相似文献   

4.
目的:测定银黄胶囊中绿原酸和黄芩苷的含量。方法:采用RP-HPLC法,色谱柱为Agilent Extend-C18柱(250mm×4.6mm,5μm),样品用45%甲醇溶解,乙腈-水-磷酸(28:72:0.4)(用三乙胺调pH为2.7±0.1)为流动相,检测波长为280nm测定黄芩苷含量;样品用50%甲醇溶解,0.2mol·L^-1磷酸二氢钠-甲醇(75:25,磷酸调节pH为3.2)为流动相;检测波长为327nm测定绿原酸含量。结果:黄芩苷在0.0392-0.784μg范围内,线性关系良好(r=1.0000),平均回收率为99.5%。方法精密度RSD=0.61%(n=5);绿原酸在0.0429~0.858μg范围内,线性关系良好(r=1.0000),平均回收率为99.8%;方法精密度RSD=0.71%(n=5)。结论:该方法可用于银黄胶囊质量控制。  相似文献   

5.
目的:建立测定人血浆中氨磺必利浓度的高效液相色谱法。方法:以Diamonsil^TM C18(150mm×4.6mm,5μm)为色谱柱,流动相为0.03mol·L^-1磷酸二氢钾(调pH6.4)-乙腈(82:18),流速为1.0mL·min^-1,柱温40℃,检测波长为275mm。以醋酸乙酯-二氯甲烷(80:20)为提取剂。结果:氨磺必利1000.0,400.0,10.0μg·L^-1 3种质量浓度平均回收率分别为97.63%,98.71%,100.29%,日内、日间差RSD均低于8%(n=5);分析方法的最低检测浓度为10.0μg·L^-1;线性范围10.0~1000.0μg·L^-1。回归方程C=136.03 F-3.25,r=0.9996(n=9)。结论:本法灵敏、准确、简单、快速,可用于临床血药浓度监测和药动学研究。  相似文献   

6.
目的:建立测定苦参药材中苦参碱含量的高效液相色谱法。方法:采用Alltech Alltima C18(250mm×4.6mm,5μm)色谱柱,柱温25℃;流动相为0.02mol·L^-1三乙胺(醋酸调节pH9.5)-乙腈(60:40),流速1.0mL·min^-1;检测波长为220nm。结果:线性范围为0.01~2.0mg·mL^-1;稳定性试验RSD为0.57%(n=5);平均回收率为99.42%(n=6);重复性试验RSD为1.78%(n=6)。结论:本方法快速简便、准确,重复性好。  相似文献   

7.
目的:采用高效液相色谱法测定右旋布洛芬缓释栓中右旋布洛芬含量及有关物质。方法:色谱柱ODS-C18柱(250mm×4.6mm,5um);以乙腈-0.02mol·L^-1磷酸二氢钾溶液(pH2.50)(53:47)为流动相;检测波长为264nm。结果:线性范围为4~128mg·L^-1(r=1.0000),平均回收率为99.9%,RSD为0.3%(n=9)。结论:方法重复性好,准确度高,适于右旋布洛芬缓释栓的质量控制。  相似文献   

8.
目的:建立高效液相色谱法(HPLC)测定beagle犬血浆中神衰果素的含量的方法。方法:色谱柱采用Diamon-sil ODS C18柱(4.6mm×150mm,5μm),以乙腈-甲醇-0.02mol·L^-1磷酸二氢钠缓冲液(1:9:90)(磷酸二氢钠缓冲液用磷酸调pH3.0)为流动相,原儿茶醛为内标;流速为1.0mL·min^-1;柱温为30℃;检测波长为270nm。结果:HPLC法测定beagle犬血浆中神衰果素的线性范围为21.3-4260μg·L^-1,r=0.9995.低(42.6μg·L^-1)、中(426μg·L^-1)、高(2130μg·L^-1)3个质量浓度的方法回收率分别为(96.7±13.5)%,(95.6±7.6)%,(99.9±1.4)%,日内、日间RSD均小于15%;分析方法的最低定量限为21.3μg·L^-1。结论:本方法适用于神衰果素血药浓度测定和药动学研究。  相似文献   

9.
高效液相色谱法测定复方樟脑酊中吗啡含量   总被引:3,自引:0,他引:3  
目的:建立高效液相色谱法测定复方樟脑酊中吗啡含量的方法。方法:色谱柱为Kromasil100-5C18(4.6mm×250mm,5μm),流动相为0.05mol·L^-1磷酸二氢钾-0.0025mol·L^-1庚烷磺酸钠溶液-乙腈(5:5:2),检测波长220nm,流量1.0mL·min^-1,柱温30℃。结果:吗啡在4.241~21.20μg·mL^-1范围内,浓度与峰面积线性关系良好(r=0.9998);样品的平均加样回收率为99.57%,RSD为1.21%(n=6)。结论:此方法简便、快速,可作为复方樟脑酊中吗啡的含量测定方法。  相似文献   

10.
目的:建立和评价7-二氟亚甲基-5,4’-二甲氧基异黄酮(简称Gen-10)的反相高效液相色谱含量测定方法。方法:色谱柱为Hypersil GOLD C18硅胶柱(250mm×4.6mm,5μm),流动相为乙腈-0.0025mol·L^-1磷酸氢二钠水溶液(55:45),流速为1.0mL·min^-1,检测波长为254nm,柱温为25℃,进样20μL。结果:Gen-10在0.1-35μg·mL^-1范围内线性关系良好,回归方程为A=96.7C+3.77,r=0.9999;日内精密度RSD为0.051%(n=5),日间精密度RSD为0.059%(n=5);对照品溶液在12h内稳定,检测限为0.02ng;加样回收率为98.9%,RSD=1.3%(n=6)。结论:此方法简便、易行、灵敏、准确,可作为Gen-10含量测定的方法。  相似文献   

11.
岳一涛 《安徽医药》2011,15(9):1082-1083
目的建立一种辛伐他汀片中辛伐他汀含量的HPLC的测定方法。方法选用Techsphere ODS色谱柱(250 mm×4.6mm,5μm),乙腈-0.025%mol.L-1磷酸二氢钠溶液(pH=4.5)(65:35)为流动相,洗脱流速为1.0 ml·min-1,检测波长为238 nm。结果辛伐他汀在42.4~424.0 mg·L-1浓度范围内线性关系良好(r=0.999 6);平均回收率为99.6%,RSD=1.24%(n=6)。结论该方法简便,灵敏,易行,准确,适用于辛伐他汀的测定。  相似文献   

12.
Objective The aim of this study was to examine the effect of carbamazepine on the pharmacokinetics of orally administered simvastatin in healthy volunteers.Methods In a randomised, two-phase crossover study and a wash out of 2 weeks, 12 healthy volunteers took carbamazepine for 14 days (600 mg daily except 200 mg daily for the first 2 days) or no drug. On day 15, each subject ingested 80 mg simvastatin. Serum concentrations of simvastatin and its active metabolite simvastatin acid were measured up to 24 h.Results Carbamazepine decreased the mean total area under the serum concentration–time curve of simvastatin and simvastatin acid by 75% (P<0.001) and 82% (P<0.001), respectively. The mean peak concentrations of both simvastatin and simvastatin acid were reduced by 68% (P<0.01), and half-life of simvastatin acid was shortened from 5.9±0.3 h to 3.7±0.5 h (P<0.01) by carbamazepine.Conclusion Carbamazepine greatly reduces the serum concentrations of simvastatin and simvastatin acid, probably by inducing their metabolism. Concomitant administration of carbamazepine and simvastatin should be avoided or the dose of simvastatin should be considerably increased.  相似文献   

13.
Background: Treatments with ezetimibe/simvastatin (combined or alone) have been indicated as very promising approaches to strongly reduce cholesterol levels in hyperlipidemic patients. Objective: We will discuss the efficacy and safety of ezetimibe/simvastatin and their potential to reduce atheroprogression. The molecular mechanisms underlying the possible benefits in atherosclerosis and its complications will also be described. Results/conclusions: Combined therapy with ezetimibe/simvastatin has been shown to improve lipid profile inducing a very rapid reduction of low-density lipoprotein cholesterol levels in clinical trials. In the near future, potential clinical benefits could be observed in the IMPROVE-IT or SHARP trials. Although clinical studies are needed to further confirm safety of ezetimibe/simvastatin therapy, the greater efficacy in lipid-lowering was not associated with the increase of adverse events. Also the possible association between ezetimibe and cancer, which was observed in the SEAS trial, was not confirmed by further studies and meta-analyses. At present, ezetimibe should be considered an effective lipid-lowering agent that can be used in conjunction with simvastatin at the beginning of therapy, or included in the treatment of patients who do not achieve their low-density lipoprotein cholesterol goal with statins alone.  相似文献   

14.
辛伐他汀的半合成   总被引:5,自引:0,他引:5  
报道了从洛伐他汀(lovastatin)合成调血脂药辛伐他汀(simvastatin),用三甲基氯硅烷保护活泼羟基,通过胺解、羟基保护、甲基化、去保护等反应合成了辛伐他汀,通过元素分析,IR,UV,^1H—NMR,^13C—NMR及MS证实其结构。  相似文献   

15.
目的 建立辛伐他汀的含量及其有关物质的高效液相色谱测定方法.方法 色谱柱:Luna C18 (250 mm×4.6 mm,5 μm);流动相:0.025 mol/L 磷酸二氢钠溶液(pH值为4.5):乙腈(35:65);流速:1.0ml/min;检测波长:238 nm;柱温:室温.进样量为20μl.结果 在所选定的液相色谱条件下,有关物质与主药分离良好.回归方程Y=3.256C×103+4.510×102,在2~200 μg/ml 范围内呈现良好的线性(r=0.9996).平均回收率为99.32%,RSD为0.31%(n=9).结论 此方法重现性好,准确度高,专属性强.适用于辛伐他汀的含量测定及相关物质检查.  相似文献   

16.
目的:合成降脂药辛伐他汀。方法:以洛伐他汀为原料,通过酰化、甲基化、水解、环合等反应合成了辛伐他汀。结果:目标化合物辛伐他汀经核磁共振氢谱和核磁共振碳谱确证,总收率为76%。结论:本方法优化了反应条件和投料比,缩短了反应时间,简化了操作步骤,适合工业化生产。  相似文献   

17.
目的:建立血浆中辛伐他汀及其主要代谢活性成分辛伐他汀羟基酸的含量测定方法。方法:以洛伐他汀为内标物质,流动相采用甲醇-水-冰醋酸(74:26:0.5),检测波长为238nm,流速为1.0mL·min~(-1)。血浆样品采用乙腈沉淀蛋白处理。并测定了10只比格犬单剂量口服辛伐他汀自乳化胶囊和市售片后的血药浓度。结果:血浆中内源性物质对辛伐他汀及辛伐他汀羟基酸的测定无干扰;最低检出限辛伐他汀为0.5ng·mL~(-1),辛伐他汀羟基酸为0.75ng·mL~(-1);辛伐他汀羟基酸在2~100ng·mL~(-1)浓度范围内线性关系良好,r=0.9989,辛伐他汀在1~50ng·mL~(-1)浓度范围内线性关系良好,r=0.9993;绝对回收率为79.68%~95.3%,方法回收率为89.1%~95.3%;日内精密度 RSD≤2.9%、日间精密度 RSD≤4.6%。结论:本方法处理简单,无干扰,灵敏度高,适合测定生物样本中的辛伐他汀及辛伐他汀羟基酸。  相似文献   

18.
Sanford M  Curran MP 《Drugs》2008,68(16):2373-2386
Niacin extended-release (ER)/simvastatin is a once-daily, fixed-dose combination of the HMG-CoA reductase inhibitor simvastatin and an ER formulation of niacin (a B-complex vitamin). In healthy volunteers who were given niacin ER/simvastatin 2000 mg/40 mg, niacin exposure was similar to that with niacin ER 2000 mg, while simvastatin exposure was increased compared to that with simvastatin 40 mg. In patients with elevated non-high-density lipoprotein cholesterol (non-HDL-C) but with low-density lipoprotein cholesterol (LDL-C) at or below the National Cholesterol Education Program (NCEP) goal after a > or = 2-week simvastatin 20 mg/day run-in period (SEACOAST I), 24 weeks of niacin ER/simvastatin 1000 mg/20 mg or 2000 mg/20 mg per day reduced median plasma non-HDL-C levels to a significantly greater extent than simvastatin 20 mg/day. In patients with elevated non-HDL-C and LDL-C at any level after a > or = 2-week simvastatin 40 mg/day run-in period (SEACOAST II), 24 weeks of niacin ER/simvastatin 1000 mg/40 mg or 2000 mg/40 mg per day was noninferior to simvastatin 80 mg/day in reducing median plasma non-HDL-C levels. Compared with simvastatin monotherapy, there was no significant difference in reduction in plasma LDL-C levels with niacin ER/simvastatin in SEACOAST I, and the noninferiority criterion for LDL-C was not met in SEACOAST II. However, plasma HDL-C levels increased more and triglyceride levels were lowered more than with simvastatin monotherapy (SEACOAST I and II). Niacin ER/simvastatin was generally well tolerated, with flushing being the most common adverse reaction.  相似文献   

19.
目的:建立UPLC-MS/MS法同时测定人血浆中辛伐他汀和辛伐他汀羟基酸的浓度。方法:血浆样品用甲基叔丁基醚提取,离心后取上清液氮气吹干,流动相复溶后进行UPLC-MS/MS测定。色谱柱:BEH C18(2.1 mm×50 mm,1.7μm);流动相:乙腈-0.01 mol.L-1醋酸铵(72∶28);流速:0.15 mL.min-1;柱温:40℃,进样量:8μL。电喷雾离子化(ESI),正离子模式多重反应选择离子检测(MRM),辛伐他汀、辛伐他汀羟基酸及内标洛伐他汀的检测离子对分别为:m/z 419→199,437→303,405→199。结果:血浆样品中辛伐他汀、辛伐他汀羟基酸线性范围分别为0.241~61.76 ng.mL-1(r=0.999,n=5)和0.344~88.16 ng.mL-1(r=0.997,n=5),日内、日间精密度(RSD)均小于15%,方法的平均回收率分别为100.6%和106.0%,血浆基质对血浆中的辛伐他汀和辛伐他汀羟基酸测定无干扰。结论:建立的UPLC-MS/MS法处理简单、灵敏、特异性高,定量准确,为辛伐他汀制剂的临床药代动力学研究提供了简便、准确的分析测定方法。  相似文献   

20.
患者男,63 岁。因巩膜、全身皮肤黄染 6 d,加重 3 d 入院。有纳差、厌食、恶心 和全身乏 力,曾出现陶 土色 大便 3 次 。无发 热、 腹痛 和呕吐 。发 病前 饮 用自 制“ 洋 葱酒 ” (干 红 葡萄 酒 洋 葱 浸泡 ),50mL/d ,服用 4 d 后即发病。入院前 经 BUS 检查 发现胆囊 结石,以 “急性梗阻 性黄疸, 胆结石” 收入普外科治疗。既往有糖尿 病史 10 多年 ,现用长 效胰岛素 治疗。2 年前 因冠心病行 冠状动脉 搭桥术, 长期服阿司匹 林 120 mg/d 。 入院查 体 :巩 膜 及全 身 皮肤 黄染 , 腹平 坦 、软 , 压痛 ( ), 胆囊 及 肝脾…  相似文献   

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