scholarly journals A rapid and reliable determination of doxycycline hyclate by HPLC with UV detection in pharmaceutical samples

2008 ◽  
Vol 73 (6) ◽  
pp. 665-671 ◽  
Author(s):  
Snezana Mitic ◽  
Gordana Miletic ◽  
Danijela Kostic ◽  
Daniela Naskovic-Ðokic ◽  
Biljana Arsic ◽  
...  
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Uv Detector ◽  
Doxycycline Hyclate ◽  
Reliable Determination ◽  
Pharmaceutical Samples ◽  
Liquid Chromatographic

An accurate, sensitive and reproducible high performance liquid chromatographic (HPLC) method for the quantification of doxycycline hyclate in pharmaceutical samples has been developed and validated. The drug and the standard were eluted from a Lichrosorb RP-8 (250 mm x 4.6 mm, 10 mm particle size) at 20?C with a mobile phase consisting of methanol, acetonitrile and 0.010 M aqueous solution of oxalic acid (2:3:5, v/v/v). The flow rate was 1.25 ml min-1. A UV detector set at 350 nm was used to monitor the effluent. Each analysis required no longer than 4 min. The limits of detection and quantification were 1.15 and 3.84 ?g ml-1, respectively. Recoveries for different concentrations ranged from 99.58 to 101.93%.

scholarly journals Determination of Dyclonine Hydrochloride by a HPLC Method and Camphor and Menthol by a GC Method in Compound Lotion

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Suying Ma ◽  
Haixia Lv ◽  
Xiaojun Shang
Keyword(s):  
Retention Time ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Ionization Detector ◽  
Uv Detector ◽  
Flame Ionization ◽  
Liquid Chromatographic

A high performance liquid chromatographic (HPLC) method with UV detector for the determination of dyclonine hydrochloride and a gas chromatography (GC) method with flame ionization detector (FID) for the determination of camphor and menthol in lotion were developed. The developed HPLC method involved using a SinoChoom ODS-BP C18reversed-phase column (5 μm, 4.6 mm × 200 mm) and mobile phase consisting of acetonitrile : water : triethylamine in a ratio of 45 : 55 : 1.0; pH was adjusted to 3.5 with glacial acetic acid. The developed GC method for determination of camphor and menthol involved using an Agilent 19091J-413 capillary chromatographic column (30 m × 320 μm × 0.25 μm). The two methods were validated according to official compendia guidelines. The calibration of dyclonine hydrochloride for HPLC method was linear over the range of 20–200 μg/mL. The retention time was found at 6.0 min for dyclonine hydrochloride. The calibration of camphor and menthol of GC method was linear over the range of 10–2000 μg/mL. The retention time was found at 2.9 min for camphor and 3.05 min for menthol. The proposed HPLC and GC methods were proved to be suitable for the determination of dyclonine hydrochloride, camphor, and menthol in lotion.

High Performance Liquid Chromatographic Determination of Primidone in Tablets

1982 ◽  
Vol 65 (5) ◽  
pp. 1063-1065
Author(s):  
Stanley E Roberts
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
Chromatographic Determination ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Average Recovery ◽  
Relative Standard ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract A high performance liquid chromatographic (HPLC) method is described for the quantitative determination of primidone in tablets. A ground tablet sample is diluted directly in the mobile phase, at a concentration of about 1 mg/mL of primidone, mixed and deaerated, and filtered. The resulting solution is then quantitated by HPLC. The average spike recoveries for the 50 mg and 250 mg tablets were 101.2% and 99.0%, respectively. The average recovery for an authentic mixture formulated at the 250 mg level was 100.1% with a relative standard deviation of 0.45%.

scholarly journals DEVELOPMENT AND VALIDATION OF A HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC METHOD DETERMINATION OF ZIDOVUDINE ENCAPSULATED IN PCL NANOPARTICLES

2017 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Milena Cristina Ribeiro Souza Magalhães ◽  
Alisson Samuel Portes Caldeira ◽  
Hanna De Sousa Rocha Almeida ◽  
Sílvia Ligório Fialho ◽  
Armando Da Silva Cunha Junior
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Liquid Chromatographic Method ◽  
Development And Validation ◽  
Liquid Chromatographic ◽  
Isocratic Mode

A reversed-phase high-performance liquid chromatographic (HPLC) method was developed and validated for the determination of encapsulation efficiency of zidovudine in nanoparticules. The method was carried out in isocratic mode using 0.040M sodium acetate: methanol: acetonitrile: glacial acetic acid (880:100:20:2) as mobile phase, a C8 column at 25ºC and UV detection at 240 nm. The method was linear (r2 ˃ 0.99) over the range of 25.0-150.0 μg/mL, precise (RSD ˂ 5%), accurate (recovery = 100.5%), robust and selective. The validated HPLC-UV method can be successfully applied to determine the rate of zidovudine in nanoparticules.

scholarly journals Simultaneous determination of ethinyl estradiol and drospirenone in oral contraceptive by high performance liquid chromatography

2013 ◽  
Vol 49 (3) ◽  
pp. 521-528 ◽  
Author(s):  
Viviane Benevenuti Silva ◽  
Angel Arturo Gaona Galdos ◽  
Cintia Maria Alves Mothe ◽  
Michele Bacchi Pallastrelli ◽  
Maria Segunda Aurora Prado ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Mobile Phase ◽  
High Performance ◽  
Ethinyl Estradiol ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Elution Time ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

A simple, rapid, economical and reliable high performance liquid chromatographic method has been developed and successfully applied in simultaneous determination of ethinyl estradiol and drospirenone in coated tablets. The HPLC method was performed on a LiChroCART® 100RP column (125x4 mm i.d., 5 µm) with acetonitrile:water 50:50 (v/v) as mobile phase, pumped at a flow rate of 1.0 mL.min-1. The fluorescence detection for ethinyl estradiol was made at λex= 280 nm and λem= 310 nm and a UV detection for drospirenone was made at 200 nm. The elution time for ethinyl estradiol and drospirenone were 4.0 and 5.7 min, respectively. The method was validated in accordance to USP 34 guidelines. The proposed HPLC method presented advantages over reported methods and is suitable for quality control assays of ethinyl estradiol and drospirenone in coated tablets.

Stereospecific Determination of Sertraline and its Impurities in Bulk Drug Using Cyclodextrins as a Chiral Selector

2020 ◽  
Vol 16 (7) ◽  
pp. 823-830 ◽  
Author(s):  
Navjot Kaur Sandhu ◽  
Durga Das Angehore ◽  
Neeraj Upmanyu ◽  
Pawan K. Porwal
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
Method Development ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Related Substances ◽  
System Suitability ◽  
Bulk Drug ◽  
Liquid Chromatographic

Background: Sertraline Hydrochloride, an oral anti-depressant, has two chiral centers and its cis enantiomers and trans diasteromers are defined as related substances by United State Pharmacopoeia and British Pharmacopoeia. Introduction: A selective, stereospecific and economical high performance liquid chromatographic (HPLC) method was developed for the determination of sertraline enantiomeric forms. The HPLC-UV method was developed and optimized in the terms of system suitability parameters. Methods: The elution was made using a mixture of -cyclodextrin (-CD) and hydroxypropyl - cyclodextrin (HP -CD). Analysis was performed on a Zorbax SB C-18 column (250 x 4.6mm), 5μ with the mobile phase consisting of 170mM KH2PO4 containing -CD and HP -CD (pH: 3.0 with dil. H3PO4) and acetonitrile (75:25, v/v). Flow rate was kept at 1.0mL/min and the detection was carried out by UV at 220nm. Enantio-separation for sertraline was carried out using two different CDs (β-CD and HP β- CD) at different concentrations in the mobile phase. Results: Complete resolution of all the four isomers was achieved using 9mM β-CD and 15mM HP β- CD in the mobile phase. The development was optimized using central composite quadric model, where concentration of -CD and HP -CD were varied and resolution between trans diastereomeric impurities was calculated as a response. Conclusion: Resolution between any pair of isomers was found to be more than 2. Method development and optimization leading to the best resolution between the isomers of sertraline is described in detail.

Development and Application of HPLC Method for Clinical Pharmacokinetic Study of Domperidone

2016 ◽  
Vol 9 (6) ◽  
pp. 3531-3535
Author(s):  
Prasad Neerati ◽  
Bhargavi Latha A ◽  
Y. Shravan Kumar ◽  
Y Madhusudan Rao
Keyword(s):  
Pharmacokinetic Study ◽  
Mobile Phase ◽  
High Performance ◽  
Internal Standard ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Assay Method ◽  
Uv Detector ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

A simple and sensitive high performance liquid chromatographic method for quantification of domperidone in human serum was developed and validated. Domperi-done and internal standard (IS) propranolol hydrochloride were extracted into acetonitrile and separated using an isocratic mobile phase on a Phenomenx C18 column. The eluent was monitored by UV detector at 270 nm at a flow rate of 1.0 mL min–1. The linearity range of proposed  method was 2.5–1000 ng/ml. The intra-day and inter-day coefficient of variation and percent error values of the assay method were less than 15% and mean recovery was more than 97 and 96% for domperidone and IS, respectively. The method was found to be precise, accurate and specific during the study. The method was successfully applied for pharmacokinetic study of domperidone in humans.  

scholarly journals Development and Validation of a RP-HPLC Method for Determination of Nimodipine in Sustained Release Tablets

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Xiaojun Shang ◽  
Suying Ma ◽  
Zheshen Li
Keyword(s):  
Sustained Release ◽  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Uv Detector ◽  
Rp Hplc ◽  
Sustained Release Tablets ◽  
Liquid Chromatographic

A rapid, sensitive, and reproducible reverse phase high performance liquid chromatographic (RP-HPLC) method with UV detector for the determination of nimodipine in sustained release tablets was developed. The method involved using a SinoChoom ODS-BP C18reversed phase column (5 μm, 4.6 mm × 200 mm) and mobile phase consisting of methanol-acetonitrile-water (35 : 38 : 27, v/v). The flow rate is 1.0 mL/min, the UV detector was operated at 237 nm, and the column was maintained at 25°C. The method was validated according to official compendia guidelines. The calibration curve of nimodipine for RP-HPLC method was linear over the range of 10–100 μg/mL. The retention time was found at 7.50 min for nimodipine. The variation for interday and intraday assay was found to be less than 0.72%. The proposed RP-HPLC was proved to be suitable for the determination of nimodipine in sustained release tablets.

High Performance Liquid Chromatographic Method for Simultaneous Determination of Residual Benomyl and Methyl 2-BenzimidazoIe Carbamate on Apple Foliage Without Cleanup

1980 ◽  
Vol 63 (6) ◽  
pp. 1291-1295
Author(s):  
Mikio Chiba ◽  
D F Veres
Keyword(s):  
High Performance ◽  
High Performance Liquid Chromatographic ◽  
Hplc Method ◽  
Uv Detector ◽  
System A ◽  
Apple Leaves ◽  
Freeze Dried ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

Abstract A simple HPLC method has been developed to individually determine residues of benomyl and MBC on apple leaves without cleanup. Sample leaves in a Mason jar are freeze-dried and tumbled for extraction in CHC13 containing 5000 μg n-propyl isocyanate/mL at 1°C. n-Butyl isocyanate is added to the extract at 5000 μg/mL, and 20 μL of the mixture is injected into the HPLC system. A Brownlee LiChrosorb silica gel column with a guard column is operated with a mixed mobile phase of chloroform-hexane (4+1) saturated with water. MBC, present as a degradation compound of benomyl, is identified as methyl 1 – (n – propylcarbamoyl) – 2 – benzimidazole carbamate (MBC-n-PIC derivative). At 280 nm, both benomyl and MBC-n-PIC can be detected with a UV detector at a level of 0.2 ppm in apple leaves.

High Performance Liquid Chromatographic Determination of Caffeine in Decaffeinated Coffee, Tea, and Beverage Products

1983 ◽  
Vol 66 (3) ◽  
pp. 606-609 ◽  
Author(s):  
Samy H Ashoor ◽  
George J Seperich ◽  
Woodrow C Monte ◽  
Jim Welty
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
Chromatographic Determination ◽  
High Performance Liquid Chromatographic ◽  
Uv Detector ◽  
Coefficients Of Variation ◽  
Decaffeinated Coffee ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract A method was developed for determining caffeine in decaffeinated coffee, tea, and beverage products by high performance liquid chromatography (HPLC). The HPLC system consisted of a Bio-Sil ODS-5S C18 column, methanol-water (25 + 75) mobile phase at 1 mL/min, and a UV detector. The method is simple and specific. Caffeine recoveries were 93.8-98.3% and coefficients of variation were 0.90-2.25%.

scholarly journals Determination of apramycin in oral soluble powder by a HPLC method using pre-column derivatization with o-phthalaldehyde and UV detection

2011 ◽  
Vol 47 (2) ◽  
pp. 261-268 ◽  
Author(s):  
Elisabete de Almeida Barbosa Antunes ◽  
Felipe Rebello Lourenço ◽  
Terezinha de Jesus Andreoli Pinto
Keyword(s):  
High Performance ◽  
Aminoglycoside Antibiotic ◽  
High Performance Liquid Chromatographic ◽  
Reversed Phase ◽  
Hplc Method ◽  
Mercaptoacetic Acid ◽  
Uv Detector ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

A high-performance liquid chromatographic method employing pre-column derivatization with o-phthalaldehyde (OPA) and 2-mercaptoacetic acid was developed for the determination of apramycin, an aminoglycoside antibiotic used in veterinary medicine, in the oral soluble powder form. The chromatographic separation was done by ion-pair HPLC using a C18 reversed-phase column, Synergy Hydro (150 mm x 4.6 mm x 4 µm) and mobile phase composed of 0.005 mol/L sodium octanosulfonate in a mixture of acetonitrile: water: acetic acid (45:55:2) (v/v/v) with a flow rate of 1.0 mL/min; the UV detector was operated at 332 nm. The developed method was validated according to official compendia guidelines, having demonstrated robustness, selectivity and linearity for the concentration range of 0.02 to 0.05 mg/mL, precision (with RSD < 2.0% both for intra and inter-day precision) accuracy (average recuperation of 99.33%) and detectivity (quantification and detection limits of 0.08 and 0.02 µg/mL, respectively). Three batches of commercial apramycin oral soluble powder were analyzed by both the proposed method and the official microbiological method, where all the results obtained were in the acceptable range (95% to 105% of labeled value of apramycin). Both methods were statistically compared by the t test, which yielded no significant differences (α = 0.05) thereby confirming the equivalence of the methods.

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