QUANTIFICATION OF TWO MARKER COMPOUNDS IN GMELINA ARBOREA ROXB. STEM BARK USING VALIDATED THIN LAYER CHROMATOGRAPHIC-DENSITOMETRIC METHOD

INDIAN DRUGS ◽  
2014 ◽  
Vol 51 (11) ◽  
pp. 28-35
Author(s):  
N Vyas ◽  
◽  
M. Patel
Keyword(s):  
Stem Bark ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Gmelina Arborea ◽  
Hptlc Plate ◽  
Marker Compounds ◽  
Derivatizing Reagent ◽  
Plant Stem ◽  
Tlc Analysis ◽  
Ich Guideline

Gmelina arborea Roxb. (Verbenaceae) is known as Gambhari in Ayurvedic System of medicine and being used as immuno-modulator since ancient time. Plant sterols such as β-sitosterol and Lupeol are reported to have such activity. A simple, accurate, precise, rapid and reproducible TLC densitometric method was developed for simultaneous estimation of β-sitosterol and Lupeol in plant stem bark. Compounds were separated on silica gel 60 F254 HPTLC plate using Toluene: Ethyl acetate: Formic acid (8.8:1.3:0.1, v/v/v) using Anisaldehyde-Sulphuric acid as the derivatizing reagent. TLC Analysis was performed at 520 nm. Rf value of β-sitosterol and Lupeol were found to be 0.34±0.02 and 0.46±0.01 respectively. Linearity range was 150-350 ng/spot and 300-700 ng/spot with correlation coefficient 0.998 and 0.999 for β -sitosterol and Lupeol, respectively. Method was validated as per ICH guideline. The accuracy was found to be 100.55-102.86% and 99.40-101.56% for β-sitosterol and Lupeol, respectively by recovery studies. The amount of β-sitosterol and Lupeol was found to be 4.4 mg % and 3.6 mg %. This method can be employed for routine quality control analysis of β-sitosterol and Lupeol in stem bark of Gmelina arborea Roxb.

Simultaneous Estimation of Ilaprazole and Domperidone in Pharmaceutical Dosage Form

2016 ◽  
Vol 9 (6) ◽  
pp. 3549-3555
Author(s):  
Gopi Patel ◽  
Kiral M Prajapati ◽  
Bhavesh Prajapati ◽  
Samir K Shah
Keyword(s):  
Dosage Form ◽  
Ammonia Solution ◽  
Hplc Method ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Linear Calibration ◽  
Pharmaceutical Dosage Form ◽  
Stability Indicating ◽  
Water Ph ◽  
Alkali Hydrolysis

A simple, accurate and precise stability-indicating RP-HPLC method was developed and subsequently validated for simultaneous determination of ilaprazole and domperidone in bulk and pharmaceutical dosage form. The proposed HPLC method utilizes  C18  (250 mm × 4.6 mm × 5 µm) column with mobile phase comprising of 0.5 % glacial acetic acid in water pH 5.5 adjusted with ammonia solution: methanol in the ratio 45:55 v/v at a flow rate of 1.0 ml/min. Quantitation was achieved with UV detection at 286 nm based on peak area with linear calibration curves at concentration  ranges 80-120µg/ml for ilaprazole and 240-360 µg/ml for domperidone  with correlation coefficient of 0.999.The retention times of ilaprazole and domperidone  were found to be 3.0 min, 5.4 min respectively. The mean recoveries obtained for ilaprazole and domperidone were found to be 99.76 ± 0.6463 % and 100.7 ± 0.2424 % respectively. Stress testing which covered acid, alkali hydrolysis, and peroxide, photolytic, thermal degradation was performed to prove the specificity of the proposed method and degradation was achieved. The proposed method was successfully applied for the stability indicating simultaneous estimation of ilaprazole and domperidone in routine quality control analysis in bulk and pharmaceutical formulation.

ANALYTICAL METHOD DEVELOPMENT AND ITS VALIDATION FOR EVALUATION OF POLYHERBAL FORMULATION

INDIAN DRUGS ◽  
2018 ◽  
Vol 55 (10) ◽  
pp. 66-68
Author(s):  
◽  
A. P Jadhav
Keyword(s):  
Immune Response ◽  
Ethyl Acetate ◽  
Analytical Method ◽  
Mobile Phase ◽  
Method Development ◽  
Simultaneous Estimation ◽  
Active Constituents ◽  
Polyherbal Formulation ◽  
Marker Compounds ◽  
Hptlc Method

Talekt capsule is a branded polyherbal formulation used for enhancing the immune response to dermal infections and also for treating skin disorders. Curcumin and embelin, which are the active constituents of Haridra and Vidanga, respectively were used as marker compounds for developing a simple, accurate, precise and robust HPTLC method for simultaneous estimation. The mobile phase of toluene: ethyl acetate: formic acid (6.5: 3: 0.2 v/v/v) was used for separation. 381nm was used as wavelength for analysis. The Rf value obtained for curcumin, and embelin was found to be 0.51 ± 0.2 and 0.33 ± 0.2, respectively. The developed method was validated on the basis of ICH Q2 (R1) guidelines.

Analytical Method Development and Validation for the Simultaneous Estimation of Metformin Hydrochloride and Alogliptin by RP-HPLC in Bulk and Tablet Dosage Forms

2021 ◽  
pp. 111-118
Author(s):  
Kapil Rana ◽  
Pushpendra Sharma
Keyword(s):  
Method Development ◽  
Analytical Techniques ◽  
Dosage Forms ◽  
Metformin Hydrochloride ◽  
Simultaneous Estimation ◽  
Gradient System ◽  
Control Analysis ◽  
Uv Detector ◽  
Rp Hplc ◽  
Tablet Dosage

Objective: The day by day new combinations drugs are being introduced in market. Then the multiple therapeutic agents which acts at different sites are used in the management of various diseases and disorders are done. Thus it is necessary to develop methods for analysis with the help of number of analytical techniques which are available for the estimation of the drugs in combinations. An accurate, precise and reproducible RP-HPLC method was developed for the simultaneous quantitative determination of Metformin Hydrochloride (MET) and Alogliptin (ALO) in tablet dosage forms. Methods: Younglin (S. K.) gradient system UV detector and C18 column with 250 mm x 4.6 mm i. d. and 5μm particle size Acetonitrile: OPA water (80: 20v/v) pH 2.5 was used as the mobile phase for the method. The detection wavelength was 283 nm and flow rate was 0.9ml/min. Results: In the developed method, the retention time of MET and ALO were found to be 6.366 min and 8.616 min. The developed method was validated according to the ICH guidelines. Conclusion: In this methods linearity, precision, range, robustness were observed. The method was found to be simple, accurate, precise, economic and reproducible. So the proposed methods can be used for the routine quality control analysis of MET and ALO in bulk drug as well as in formulations.

scholarly journals Method Development and Validation of Stability Indicating RP-HPLC Method for Simultaneous Estimation of Escitalopram Oxalate and Clonazepam in Bulk and its Pharmaceutical Formulations

2019 ◽  
Vol 9 (1-s) ◽  
pp. 265-274
Author(s):  
Bindusar Kalia ◽  
Uttam Singh Baghel
Keyword(s):  
High Performance ◽  
Method Development ◽  
Limit Of Detection ◽  
Pharmaceutical Formulations ◽  
Calibration Plot ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Reverse Phase ◽  
Limit Of Quantification ◽  
Rp Hplc

This article refers to simple isocratic reverse-phase high-performance liquid chromatographic method (RP-HPLC) developed for the simultaneous quantification of Escitalopram Oxalate (EST) and Clonazepam (CZP) in active pharmaceutical ingredient and pharmaceuticals. The separation of the two drugs was attained using a C₁₈ column (250mm×4.6mm, 5µ) as a stationary phase. The mobile phase was used as a mixture of methanol; acetonitrile; and 0.05M potassium dihydrogen orthophosphate buffer (pH 4 adjusted by orthophosphoric acid) with an isocratic ratio of 40:20:40 v/v. Detection was made by using PDA detector at 210 nm. Escitalopram Oxalate (RT= 4.428 minutes) and Clonazepam (RT= 6.532 minutes) were separated in a single chromatographic run with resolution of 8.719. The calibration plot indicated good linear relationship with r2 = 0.998 for Escitalopram Oxalate in concentration range of 32 µg/ml - 48 µg/ml and r2 = 0.999 for Clonazepam in concentration range of 16 µg/ml - 24 µg/ml. The retrievals for Escitalopram Oxalate and Clonazepam were found to be 99.75% and 99.00%, respectively. The established analytical method was validated and found acceptable as per ICH guidelines for linearity, precision, accuracy, specificity, limit of detection, limit of quantification, robustness and stability. Escitalopram Oxalate and Clonazepam individually as well as in combination were exposed to different stress conditions like acid, base, thermal, photolytic and oxidation degradation and peaks of a degraded product were well determined from peaks of pure drug. This method is modest, quick and appropriate for routine quality control analysis. Keywords: Reverse Phase – HPLC; Escitalopram Oxalate; Clonazepam; Validation; Degradation study.

scholarly journals SIMULTANEOUS ESTIMATION OF AZILSARTAN AND CILNIDIPINE IN BULK BY RP-HPLC AND ASSESSMENT OF ITS APPLICABILITY IN MARKETED TABLET DOSAGE FORM

2022 ◽  
pp. 116-123
Author(s):  
SWATI M. ANDHALE ◽  
ANNA PRATIMA G. NIKALJE
Keyword(s):  
Dosage Form ◽  
Regression Line ◽  
Dosage Forms ◽  
Simultaneous Estimation ◽  
Rp Hplc ◽  
System Suitability ◽  
Percent Recovery ◽  
Standard Solution ◽  
Tablet Dosage ◽  
Ich Guideline

Objective: This study aims to build up the RP-HPLC process for Azilsartan and Cilnidipine and authenticate the RP-HPLC process according to ICH validation code Q2R1. Methods: System suitability testing was performed to discover the qualifying criterion of the method by injecting the identical standard solution of Azilsartan 40μg/ml and Cilnidipine 10μg/ml in mixture/combination in subsequent optimized chromatographic conditions and the chromatogram was recorded. Moreover, the planned method was validated as per ICH guideline Q2R1 for the following parameters: linearity and range, precision, accuracy, robustness, and determined % recovery. Results: The outcomes of %RSD for retention time and peak area were found to be 0.65 and 1.32 for Azilsartan and 0.85 and 1.90 for Cilnidipine. The correlation coefficient, y-intercept, slope of the regression line were 0.9996,-1127.1, 3313.9, and 0.9993, 1460.2, 2876.4 for Azilsartan and Cilnidipine, respectively. Moreover, the range of this method was observed to be 40-240μg/ml and 10-60 μg/ml for Azilsartan and Cilnidipine, standard concentrations respectively. The % RSD achieved for precision (repeatability) was observed in the range of 1.57 to 2.43 for Azilsartan and 0.70 to 1.88 for Cilnidipine. The % accuracy was found in the range of 96.96 to 101.92% w/w for Azilsartan and 99.19 to101.96%w/w for Cilnidipine. The percent recovery values achieved for Azilsartan were in the range of 99.87 to 106.39% w/w and for Cilnidipine in the range of 94.51 to 105.96% w/w. Conclusion: The author concludes that the simultaneous estimation of Azilsartan and Cilnidipine with predefined objectives was successfully achieved. Moreover, the method was found to be steadfast for the quantification of Azilsartan and Cilnidipine in marketed tablet dosage forms.

scholarly journals Simultaneous estimation of troxerutin and calcium dobesilate in presence of the carcinogenic hydroquinone using green spectrofluorimetric method

2021 ◽  
Vol 8 (2) ◽  
pp. 201888
Author(s):  
M. M. Tolba ◽  
M. M. Salim ◽  
M. El-Awady
Keyword(s):  
Quality Control ◽  
Human Plasma ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Calcium Dobesilate ◽  
Linear Calibration ◽  
Quality Control Laboratory ◽  
Spectrofluorimetric Method ◽  
Highly Sensitive ◽  
Comprehensive Study

In the present study, we conducted two facile and highly sensitive spectrofluorimetric approaches in order to quantify the vasoprotective agents; troxerutin (TROX) and calcium dobesilate (DOB) in the presence of hydroquinone (HQ) (as a highly toxic impurity and potential degradation product of DOB) in commercial formulations and human plasma. The first approach relies simply on using ethanol as an eco-friendly solvent for the estimation of DOB at 345 nm after being excited at 305 nm. The linearity was carefully investigated between DOB concentration and the relative fluorescence intensity in the range of 0.05–0.8 µg ml −1 . Due to the high method simplicity and sensitivity, applying the first approach to quality control analysis and spiked human plasma samples with mean % recoveries 100.74 ± 3.71 adds another merit. The second approach involved rapid conventional fluorimetric estimation of ethanolic TROX solution in TROX/DOB combined dosage forms at 455/350 nm (emission/excitation) with a linear calibration chart covering the range of 0.1–1.2 µg ml −1 . Moreover, the second approach involved a comprehensive study in a trial to solve the problem of superposition of DOB and HQ graph adopting the first derivative synchronous fluorimetric mechanism in ethanol at Δ λ = 60 nm. Therefore, DOB was measured at 286 and 323 nm, while HQ could be quantitated at 301 nm. The Beer–Lambert Law has complied over the ranges of 0.1–1.0 and 0.02–0.4 µg ml −1 for DOB and HQ, respectively. Guidelines adopted by the International Council of Harmonization (ICH) were used to validate the target approaches. The developed methods are more convenient for routine quality control laboratory instead of the time-consuming and sophisticated reported techniques. Moreover, different aspects of evaluating the greenness of the proposed approaches were conducted to have a complete image of their environmental impact.

Development and Validation of Analytical Method for Simultaneous Estimation of Active Constituents in a Polyherbal Ointment by Gas Chromatography

2019 ◽  
Vol 102 (4) ◽  
pp. 1027-1032
Author(s):  
Vishal R Patel ◽  
Hardik K Soni ◽  
Vikram B Trivedi ◽  
Jigna B Patel ◽  
Suresh Jain
Keyword(s):  
Methyl Salicylate ◽  
Internal Standard ◽  
Correlation Coefficients ◽  
Simultaneous Estimation ◽  
Internal Standard Method ◽  
Active Constituents ◽  
Flame Ionization ◽  
Quality Control Testing ◽  
Marker Compounds ◽  
Development And Validation

Abstract Background: The simultaneous, quantitative determination of all active ingredients present in the analgesic formulation (Dazzle ointment) requires an ideal and novel method by which these phytoconstituents can be separated with the highest resolution without any interference from one another. Objective: The present work was conducted to develop and validate a quantitative method for the simultaneous estimation of all five phytoconstituents present in a polyherbal analgesic ointment by GC. Methods: α-Pinene, 1,8-cineole, camphor, menthol, and methyl salicylate present in the ingredients of the ointment were analyzed and quantified by GC using a crosslinked 5% phenyl polydimethylsiloxane capillary column, nitrogen as a carrier gas, and a flame-ionization detector. Aniline was used as the internal standard. Method validation was also performed in order to demonstrate its selectivity, linearity, accuracy, precision, LOD, LOQ, and robustness. Results: The calibration curves of all five marker compounds showed good linear correlation coefficients (r2 >0.998) within the tested ranges. The precision of the method was tested by carrying out intra- and interday analyses of the same sample. RSD values were observed to be <1.00%. The accuracy of the method, determined by performing recovery studies, was found to be between 99.25 and 101.39%. The developed method was also demonstrated to be robust (RSD <1.29%) by making small but deliberate variations in method parameters. Conclusions: The developed GC method is simple, precise, and accurate, it and can be used for the rapid quality control testing of the polyherbal formulation. Highlights: The developed GC method will assist in the standardization of polyherbal analgesic formulation consists of α-pinene, 1,8-cineole, camphor, menthol, and methyl salicylate as active constituents.

Development and Validation of Stability Indicating UPLC Method for Simultaneous Estimation of Phenylephrine and Fexofenadine in Suspension Dosage Form

2020 ◽  
Vol 13 (5) ◽  
pp. 5069-5074
Author(s):  
Rajitha G ◽  
Geetha Susmita Adepu
Keyword(s):  
Quality Control ◽  
Dosage Form ◽  
Orthophosphoric Acid ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Relative Standard ◽  
Pharmaceutical Industries ◽  
Acquity Uplc ◽  
Development And Validation ◽  
Liquid Chromatographic

Phenylephrine and fexofenadine are widely used products for common cold and allergic conditions. In this study, a simple, reliable, sensitive and economical Ultra Performance Liquid Chromatographic (UPLC) method was developed and validated for the simultaneous estimation of phenylephrine and fexofenadine in suspension dosage form. Efficient chromatographic separation was achieved on Acquity UPLC HSS C18 x 1.8μm column with mobile phase consisting of orthophosphoric acid buffer (pH = 2.8) and acetonitrile (55:45% v/v) at a flow rate of 0.3ml.min-1 and 1μl injection volume. TUV detector was used and detection wavelength was 272nm. The retention times of phenylephrine and fexofenadine were found to be 1.347 and 1.536 ± 0.01 mins respectively. The percentage recoveries of phenylephrine and fexofenadine were 99.93% and 99.31% respectively. The relative standard deviation for assay was found to be <2. The detection and quantification limits were found to be 0.04 and 0.13μg/ml for phenylephrine and 0.21 and 0.65μg/ml for fexofenadine respectively. Thus, the developed UPLC method was simple, rapid, sensitive and economical and it can be applied for the routine quality control analysis of combined dosage forms in quality control laboratories and in pharmaceutical industries.

VALIDATION OF PROPOSED RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF FENPIVERINIUM BROMIDE AND PITOFENONE HCL

INDIAN DRUGS ◽  
2014 ◽  
Vol 51 (07) ◽  
pp. 39-45
Author(s):  
S.V Nagpure ◽  
◽  
S.V Deshmane ◽  
K.R. Biyani
Keyword(s):  
Limit Of Detection ◽  
Pharmaceutical Formulations ◽  
Hplc Method ◽  
Simultaneous Estimation ◽  
Control Analysis ◽  
Quality Control Analysis ◽  
Rp Hplc ◽  
Limit Of Quantitation ◽  
Diammonium Hydrogen

A simple, rapid, accurate and precise RP-HPLC method was developed and validated for the determination of fenpiverinium bromide and pitofenone HCl. Separation of the drug was achieved on a reverse phase Thermo Kromasil C18 Column. The method showed a linear response for concentration in the range of 1.2-2.8μg/ml for FVB 6-14 μg/ml for PFH using diammonium hydrogen orthophosphatee buffer pH 7.2: acetonitrile as the mobile phase in the ratio of 55:45, v/v with detection at 220 nm with a flow rate of 1 ml/min and retention time was 3.77min and 7.45 min for FVB and PFH respectively. The method was statistically validated for linearity, accuracy, precision and selectivity.The limit of detection and limit of quantitation was 0.0654 µg/ml and 0.1982 µg/ml for FVB and 0.0927 µg/ml and 0.281 µg/ml for PFH, respectively. In quantitative and recovery studies, % RSD was found less than 2. Due to simplicity, rapidity and accuracy of the method, we believe that the method will be useful for routine quality control analysis of fenpiverinium bromide and pitofenone HCl in pharmaceutical formulations.

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