HPLC法测定盐酸奈必洛尔片中主药的含量

目的:建立以高效液相色谱法测定盐酸奈必洛尔片中主药含量的方法。方法:色谱柱为XTerra RP18,流动相为甲醇-0.03mo·lL-1磷酸二氢钾(0.68∶0.32),流速为1.0mL·min-1,检测波长为280nm,柱温为30℃。结果:盐酸奈必洛尔检测浓度线性范围为15.24～55.88μg·mL-1(r=0.9999,n=5);平均回收率为100.3%,RSD=0.74%(n=6)。结论:本方法简便、灵敏、准确,可用于盐酸奈必洛尔片中主药的含量测定。     

反相高效液相色谱法测定兔血浆中盐酸小檗碱的浓度

目的:建立血浆中盐酸小檗碱浓度的测定方法。方法:采用反相高效液相色谱内标法,色谱柱为DikmadiamonsilTMC18,流动相为乙腈-0.1mol/L磷酸二氢钾溶液-十二烷基硫酸钠(50∶50∶0.06),流速为1ml/min,检测波长为345nm,柱温为40℃,内标物为对二甲氨基苯甲醛。结果:盐酸小檗碱检测浓度在20.5～656ng/ml范围内线性关系良好(r=0.9999),平均回收率为99.14%,平均RSD为3.78%。结论:该方法灵敏度高、专属性强,可用于盐酸小檗碱的药动学研究。     

Analytical Method for the Simultaneous Estimation of Hydrochlorothiazide and Metoprolol Tartrate using RP HPLC

The present study deals with the estimation by RP-HPLC of two different drug components hydrochlorothiazide and metoprolol tartrate present in a tablet formulation. It is a simple, fast, precise and accurate high performance liquid chromatographic method. It is performed using phosphate buffer along with methanol as mobile phase, in the proportion of 60:40. The separation is done on a C(18) column and it is estimated at a λ(max) of 226 nm with a flow of 1 ml/min. The detection limits range from a 0.013 to 0.075 mg/ml for hydrochlorothiazide and 0.10 to 0.60 mg/ml for metoprolol tartrate, respectively. The specificity for interference of any peak with main peak of interest is checked. A scan of the individual drug was taken for assuring the λ(max). The system suitability by precision is also checked to ensure the analytical method. The method was found to be accurate and precise for estimation of the two drugs simultaneously.     

离子对-反相高效液相色谱法测定布洛伪麻分散片的含量

目的:建立布洛伪麻分散片含量的测定方法.方法:色谱柱为Kromasil C18柱(4.6 mm×150 mm,5 μm),流动相为醋酸-醋酸钠缓冲液:乙腈(4:6),每1 000 mL流动相溶解十二烷基硫酸钠1.0 g;检测波长为257 nm.结果:布洛芬和盐酸伪麻黄碱含量测定的线性范围分别为0.8～8 mg/mL(r=0.999 8)和0.12～1.2 mg/mL(r=0.999 9),平均回收率分别为101.7%(RSD=0.53%,n=9)和100.2%(RSD=0.8%,n=9).结论:该方法简便、重现性好,适用于布洛伪麻分散片的质量控制.     

反相离子对色谱法测定止咳祛痰颗粒中盐酸麻黄碱的含量

目的:测定止咳祛痰颗粒中盐酸麻黄碱含量。方法:采用反相离子对色谱法。C18柱(250 mm×4．6 mm,5μm),乙腈- 0．2％十二烷基磺酸钠(用磷酸调pH至2)(35:65)为流动相;流速:1 mL·min-1,UV检测波长为210 nm。结果:进样量在 0．05-0．26 μg之间,进样量与峰面积积分值呈良好的线性关系。回收率为97．6％。结论:样品分离效果好,测定结果准确、可靠,重复性好。     

反相高效液相色谱法同时测定盐酸丁卡因胶浆中2组分的含量

目的:建立以反相高效液相色谱法同时测定盐酸丁卡因胶浆中盐酸丁卡因和羟苯乙酯含量的方法。方法:色谱柱为C8,流动相为甲醇-无水乙醇-水-三乙胺(70∶15∶15∶0.05) ,检测波长为280nm。结果:盐酸丁卡因与羟苯乙酯的检测浓度线性范围分别为10～50μg/ml(r=0. 9997)、2～10μg/ml(r=0 .9999) ;平均回收率分别为100.82 %、100.16 %。结论:本方法简便、快速、准确,适用于盐酸丁卡因胶浆的质量控制。     

RP-HPLC Method for Simultaneous Estimation of Frusemide and Amiloride Hydrochloride in Tablet Formulation

A new reverse phase high performance liquid chromatography method for the simultaneous estimation of frusemide and amiloride hydrochloride in tablet formulation is developed. The determination was carried out on a HIQ SIL, C18 (250×4.6 mm, 5 μm) column using a mobile phase of 50 mM phosphate buffer solution:acetonitrile (50:50 v/v, pH 3.0). The flow rate was 1.0 ml/min with detection at 283 nm. The retention time for frusemide was 3.038 min and for amiloride hydrochloride 10.002 min. Frusemide and amiloride hydrochloride showed a linear response in the concentration range of 20-200 μg/ml and 10-100 μg/ml, respectively. The results of analysis have been validated statistically and by recovery studies. The mean recoveries found for frusemide was 99.98% and for amiloride hydrochloride was 100.09%. Developed method was found to be simple, accurate, precise and selective for simultaneous estimation of frusemide and amiloride hydrochloride in tablets.     

盐酸奈必洛尔的合成

6-氟-3，4-二氢-2H-1-苯并吡喃-2-甲醛与亚硫酸氢钠和氰化钠反应制得2-羟基-2-（6-氟-3，4-二氢-2H-1-苯并吡喃-2-基）乙腈，经硅胶柱色普分离，得到未见文献报道的顺式（3A）和反式（3B）非对映异构体。分别合成顺式，2-羟基-2-（6-氟-3，4-二氧-2H-1-苯并吡喃-2-基）乙醛（S）和反式-N-[2-羟基-2-（6-氟-3，4-二氢-2H-1-苯并吡喃-2-基）乙基]苄胺（8）。5和8经催化氢化及缩合、还原脱苄基、成盐后重结晶等步骤得到抗高血压药盐酸奈必洛尔。     

Determination of Montelukast Sodium and Bambuterol Hydrochloride in Tablets using RP HPLC

An accurate, specific and precise assay level gradient reverse-phase high-performance liquid chromatographic method was developed for simultaneous determination of montelukast sodium and bambuterol hydrochloride in tablet dosage form. An inertsil ODS C-18, 5 μm column having 250×4.6 mm I.D. in gradient mode, with mobile phase A, containing 0.025 M sodium phosphate buffer: methanol (85:15) and mobile phase B, containing acetonitrile:methanol (85:15) was used at different time intervals. The flow rate was 1.5 ml/min and effluent was monitored at 218 nm. The retention times of montelukast sodium and bambuterol hydrochloride were 21.2 min and 5.8 min respectively. The linearity for both the drugs was in the range of 0.25-0.75 mg/ml with correlation coefficients of 0.9999 and 0.9996 for montelukast sodium and bambuterol hydrochloride, respectively.     

RP-HPLC and Spectrophotometric Estimation of Ambroxol Hydrochloride and Cetirizine Hydrochloride in Combined Dosage Form

Rapid, precise, accurate, specific and sensitive reverse phase liquid chromatographic and absorbance ratio spectrophotometric methods have been developed for the simultaneous analysis of ambroxol hydrochloride and cetirizine hydrochloride in their tablet formulation. The chromatographic methods were standardized using a HIQ SIL-C(18) column (250×4.6 mm i.d., 10 μm particle size) with UV detection at 229 nm and mobile phase consisting of methanol-acetonitrile-water (40:40:20, v/v/v). Ambroxol hydrochloride and cetirizine hydrochloride have absorbance maxima at 243 nm and 229 nm, respectively. The isoabsorptive wavelength for both the drugs was 236 nm. For absorbance ratio method developed, wavelengths selected were 243 nm and 236 nm. The proposed methods were successfully applied to the determination of ambroxol hydrochloride and cetirizine hydrochloride in tablets, with high percentage of recovery, good accuracy and acceptable precision. Different analytical performance parameters such as linearity, precision, accuracy, limit of detection, limit of quantitation and robustness were determined according to International Conference on Harmonization ICH Q2B guidelines. Results of analysis of the developed method were compared by performing ANOVA.     

RP-HPLC法测定宫炎康颗粒中芍药苷的含量

目的建立RP-HPLC法测定宫炎康颗粒中芍药有效成份芍药苷的含量.方法shimadzu vp ODS-3色谱柱(5μm,4.6mm×150mm);流动相为0.05mol/LKH2P04-乙腈(51);流速为1.0ml/min检测波长230nm.结果线性关系良好(r=0.9998),加样回收率为97.8%.结论此方法简便、快捷、准确.     

RP—HPLC法测定人血浆中盐酸氨溴索片的浓度及其药代动力学

目的：建立测定人血浆中盐酸氨溴索浓度的方法，用于研究盐酸氨溴索片的药代动力学，方法：血浆样品先经碱化，然后用乙酸乙酯提取。采用RP－HPLC法检测。以ODS C18为固定相，PH7．0磷酸盐缓冲液－；(27:73) 流动相，检测波长为246nm，结果：血浆药浓在20－250ng.mL^-1范围内峰面积与浓度呈良好的线性，r=0\9992,平均回收率为98．98％，日内RSD＝4．5％，日间RSD＝6．8％。用本法测定8名健康志愿者单剂量口服盐酸氨溴索国产片和进口片的体内经时过程，实验数据用3P87程序拟合求得2种片剂药代动力学参数，结论：该法简便，准确，测得的2种片剂的主要药代动力学参数无显著性.差异。     

RP-HPLC法测定黄连上清片中盐酸小檗碱、盐酸药根碱和盐酸巴马汀的含量

目的:建立测定黄连上清片中盐酸小檗碱、盐酸药根碱和盐酸巴马汀含量的方法。方法:采用反相高效液相色谱法。色谱柱为AgilentC18反相柱,流动相为乙腈-25mmoL·L-1庚烷磺酸钠和50mmoL·L-1磷酸二氢钾溶液(含0.14%三乙胺,磷酸调pH至3.0)=30:70,检测波长为348nm,柱温为30℃,流速为1.0mL·min-1,进样量为5μL。结果:盐酸小檗碱检测浓度在40.48～141.70μg·mL-1范围内与峰面积积分值呈良好线性关系,平均加样回收率为100.34%,RSD=1.14%;盐酸药根碱检测浓度在6.04～14.08μg·mL-1范围内与峰面积积分值呈良好线性关系,平均加样回收率为99.70%,RSD=1.02%;盐酸巴马汀检测浓度在10.10～30.30μg·mL-1范围内与峰面积积分值呈良好线性关系,平均加样回收率为100.02%,RSD=1.17%。3批样品中盐酸小檗碱、盐酸药根碱和盐酸巴马汀的含量分别为每片40.64、6.09、10.50μg,40.35、6.05、10.43μg,40.26、6.03、10.40μg。结论:本方法灵敏、准确,专属性强,重复性好,可作为黄连上清片的质量控制方法。     

盐酸奈法唑酮片的HPLC测定

建立了盐酸奈法唑酮片含量测定的HPLC方法。采用Hypersil ODS柱，以甲醇-0．01mol／L磷酸二氢钠溶液(pH4．O)-三乙胺(78：22：0．025)为流动相，检测波长254nm。在5～100μg／ml浓度范围内，峰面积与浓度线性关系良好(r=0．9998)，平均回收率为99．5％(RSD1．O％)。     

HPLC法测定盐酸氯环利嗪片的含量

目的建立测定盐酸氯环利嗪片含量的方法。方法用反相高效液相色谱法测定。采用Inertsil CN柱（4.6mm×250mm,5μm）;流动相：庚烷磺酸钠溶液（用冰醋酸调节pH至5.0）-甲醇-乙腈（25∶57∶18）;检测波长：259nm;柱温：30℃。结果盐酸氯环利嗪浓度在20～200μg.mL-1范围内呈良好的线性关系（r=0.9997）。平均回收率为99.58%,RSD=0.62%（n=9）。结论本法专属性强,简便、灵敏、准确,可用于盐酸氯环利嗪片含量的测定以及质量控制。     

盐酸小檗碱及其相关物质分离方法的研究

目的:建立RP-HPLC法测定盐酸小檗碱及其相关物质含量。方法:选用Luna C_(18)柱,5μm,4.6mm×300mm,乙腈-缓冲液(0.05mol·L~(-1)磷酸二氢钾和0.05mol·L~(-1)庚烷磺酸钠,1:1)(40:60)为流动相,检测波长263nm,流速:1.0mL·min~(-1),柱温:30℃,进样量:20μL。结果:在4.27～85.40μg·mL~(-1)浓度范围内,线性关系良好,回归方程Y=7.373×10~7X+3.722×10~4,r=0.999 9。平均回收率为100.4％(n=9)。结论:本法简便、灵敏、准确。     

复方缬沙坦片中苯磺酸氨氯地平与缬沙坦的HPLC法测定

建立了HPLC法测定复方缬沙坦片中的苯磺酸氨氯地平和缬沙坦.采用C_18色谱柱,流动相为0.03 mol/L磷酸二氢钾溶液(用85%磷酸调至pH 3.0)-甲醇(40:60),检测波长237 nm.苯磺酸氮氛地平和缬沙坦在3~7和48~112 pg/ml浓度范围内线性关系良好,回收率为99.8%和99.6%,RSD为1.43%和1.02%.     

反相离子对高效液相色谱法测定盐酸黄酮哌酯片的含量

目的:建立一种采用反相离子对高效液相色谱法测定盐酸黄酮哌酯片含量的方法。方法:用Shim-Pack vp-ODS柱(4.6mm×150mm,5μm),以0.05mol·L~(-1)磷酸二氢钾(含1％三乙胺,用磷酸调pH3.8)-0.0025mol·L~(-1)庚烷磷酸钠甲醇溶液(1:1.2)为流动相,流速1mL·min~(-1),UV检测波长241nm。柱温:室温,进样量20μL。结果:盐酸黄酮哌酯和前体杂质3-甲基黄酮-8-羧酸的保留时间分别为7.0min和5.0min,分离度为6.0,最低检测浓度分别为1.20μg·mL~(-1)和0.55μg·mL~(-1)。盐酸黄酮哌酯在0.119～0.834mg·mL~(-1)范围内呈良好的线性关系,r=0.9999。平均回收率(n=5)分别为99.04％(RSD=0.66％),99.36％(RSD=0.87％),99.64％(RSD=0.62％)。结论:本方法简便、快速、专属,结果准确可靠,能有效控制产品质量。     

A Validated RP-HPLC Method for Simultaneous Estimation of Nebivolol and Hydrochlorothiazide in Tablets

A simple, selective, rapid, precise and economical reverse phase high pressure liquid chromatographic method has been developed for the simultaneous estimation of nebivolol and hydrochlorthiazide from pharmaceutical formulation. Phenomenex Gemini C(18) (25 cm×4.6 mm i.d., 5 μ) column with a mobile phase consisting of acetonitrile: 50mM ammonium acetate (adjusted to pH 3.5 using orthophosphoric acid) (70:30 v/v) at a flow rate of 1.0 ml/min was used. Detection was carried out at 254 nm. Probenecid was used as an internal standard. The retention times of probenecid, nebivolol and hydrochlorthiazide were 13.05, 3.32 and 4.25 min, respectively. The developed method was validated in terms of accuracy, precision, linearity, limit of detection, limit of quantitation and solution stability. The proposed method can be used for the estimation of these drugs in combined dosage forms.     

HPLC法同时测定金鸡片中盐酸巴马汀和盐酸小檗碱的含量

目的:建立同时测定金鸡片中盐酸巴马汀和盐酸小檗碱含量的高效液相色谱法。方法:采用Agilent Zorbax SB-C₁₈柱（250 mm×4.6 mm,5μm）;流动相:乙腈-0.05 mol·L^-1磷酸二氢钾溶液（用磷酸调节pH至3.0）（30:70）,流速为1.0 ml·min^-1,检测波长为265 nm。结果:盐酸巴马汀和盐酸小檗碱峰均能良好分离,进样量的线性范围分别为3.28～32.75μg·ml^-1和3.10～30.98μg·ml^-1,平均加样回收率分别为99.4%和99.4%,RSD分别为0.9%和0.6%（n=6）。结论:所用方法简便,准确,重复性好,可用于金鸡片的含量测定。