Improved UV Spectrophotometric Method for Precise, Efficient and Selective Determination of Dexamethasone in Pharmaceutical Dosage Forms

A spectrophotometric method for the selective determination of paracetamol based on its reaction with pyrochatechol violet under basic conditions to form an ion-pair complex is described. The absorption maximum of the coloured ion-pair formed is observed at 652 nm and the molar absorptivity is 4.54 x10-3l mol-1 cm-1. Beer's law is obeyed over the concentration range 0.5-34.0 μg ml-1, while that obtained using Ringbom method is in the range 3.5 -32.0 μg ml-1. There is no interference from common additives, excipients and commercial drugs present in their formulations suggesting a highly selective procedure compared with others. Statistical analysis of the obtained results showed that there is, no significant difference and absence of any systematic error in the method compared with the official one. The method is simple, rapid and convenient and was applied successfully to the determination of paracetamol in pure and in its dosage forms compared with the official method.

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Spectrophotometric Determination of Alendronate Sodium by using Sodium-1,2-Naphthoquinone-4-Sulphonate

International Journal of Pharmaceutical Sciences and Nanotechnology ◽

10.37285/ijpsn.2011.4.4.7 ◽

2012 ◽

Vol 4 (4) ◽

pp. 1563-1568

Author(s):

Sagar Suman Panda ◽

Ravi Kumar B V V ◽

D Patanaik

Keyword(s):

Spectrophotometric Method ◽

Absorption Maximum ◽

Dosage Form ◽

Dosage Forms ◽

Alendronate Sodium ◽

Colored Complex ◽

Pharmaceutical Dosage Forms ◽

Recovery Study ◽

Assay Conditions

A simple, precise and accurate spectrophotometric method was developed for analysis of the osteoporesis drug alendronate sodium (ALS). The method is based on reaction of the drug with sodium-1,2-naphthoquinone-4-sulphonate (NQS) in presence of alkali to form a brown colored complex giving absorption maximum at 525 nm. The drug obeyed Beer’s law in the range of 5-70 µg/ml with a correlation coefficient of 0.999. The LOD and LOQ values are 1.7 µg/ml and 5.0 µg/ml, respectively. The average recoveries for recovery study were found to be in the range of 99.37%-100.46%. The R.S.D. values for intraday and inter-day precision were found to be 0.48 and 0.62, respectively. The optimized assay conditions were applied successfully for determination of ALS in pharmaceutical dosage forms. No interference was observed from the excipients present in the dosage form. The method is statistically validated as per the ICH requirements.

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SIMULTANEOUS ESTIMATION AND VALIDATION OF RAMIPRIL AND TELMISARTAN BY UV SPECTROPHOTOMETRY

INDIAN DRUGS ◽

10.53879/id.51.09.10156 ◽

2014 ◽

Vol 51 (09) ◽

pp. 31-35

Author(s):

R Rambabu ◽

◽

S Vidyadhara ◽

J Subbarao

Keyword(s):

Spectrophotometric Method ◽

Correlation Coefficients ◽

Simultaneous Equation ◽

Dosage Forms ◽

Simultaneous Estimation ◽

Uv Spectrophotometry ◽

Intermediate Precision ◽

Pharmaceutical Dosage Forms ◽

Sensitive Spectrophotometric Method

A simple and sensitive spectrophotometric method for the determination of ramipril and telmisartan in pharmaceutical dosage forms has been developed. The absorption maxima were found at 220nm for ramipril and 297nm for telmisartan using 0.1N NaOH as solvent. Beer’s law was obeyed for both the drugs in the concentration range of 2-10μg/ml with correlation coefficients 0.999 for both ramipril and telmisartan. The limits of detection for ramipril and telmisartan were found to be 0.142 and 0.405μg/mL respectively and the limits of quantitation were 0.43 and 1.22μg/mL. Accuracy of the method was verified by performing recovery studies using simultaneous equation method and found to be 98.33 to 99.54%w/w for ramipril and 99.36 to 99.82 %w/w for telmisartan. %RSD of repeatability and intermediate precision studies were found to be <2 for both the drugs. Ruggedness of the method was checked by changing analyst worked and instrument used. In both the cases, the %RSD was found to be less than 2.

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DEVELOPMENT AND VALIDATION OF ULTRAVIOLET-SPECTROPHOTOMETRIC METHOD FOR DETERMINATION OF FEBUXOSTAT FOR CONDUCTING IN-VITRO QUALITY CONTROL TESTS IN BULK AND PHARMACEUTICAL DOSAGE FORMS

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2018.v11i9.25550 ◽

2018 ◽

Vol 11 (9) ◽

pp. 115

Author(s):

Jaspreet Kaur ◽

Daljit Kaur ◽

Sukhmeet Singh

Keyword(s):

Spectrophotometric Method ◽

Limit Of Detection ◽

Pharmaceutical Formulations ◽

Dosage Forms ◽

Pharmaceutical Dosage Forms ◽

Relative Standard ◽

Limit Of Quantitation ◽

Development And Validation

Objective: A simple, accurate, and selective ultraviolet-spectrophotometric method has been developed for the estimation of febuxostat in the bulk and pharmaceutical dosage forms.Method: The method was developed and validated according to International Conference on Harmonization (ICH Q2 R1) guidelines. The developed method was validated statistically with respect to linearity, range, precision, accuracy, ruggedness, limit of detection (LOD), limit of quantitation (LOQ), and recovery. Specificity of the method was demonstrated by applying different stressed conditions to drug samples such as acid hydrolysis, alkaline hydrolysis, oxidative, photolytic, and thermal degradation.Results: The study was conducted using phosphate buffer pH 6.8 and λmax was found to be 312 nm. Standard plot having a concentration range of 1–10 μg/ml showed a good linear relationship with R2=0.999. The LOD and LOQ were found to be 0.118 μg/ml and 0.595 μg/ml, respectively. Recovery and percentage relative standard deviations were found to be 100.157±0.332% and <2%, respectively.Conclusion: Proposed method was successfully applicable to the pharmaceutical formulations containing febuxostat. Thus, the developed method is found to be simple, sensitive, accurate, precise, reproducible, and economical for the determination of febuxostat in pharmaceutical dosage forms.

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Derivative spectrophotometric method for simultaneous determination of clindamycin phosphate and tretinoin in pharmaceutical dosage forms

DARU Journal of Pharmaceutical Sciences ◽

10.1186/2008-2231-21-29 ◽

2013 ◽

Vol 21 (1) ◽

Cited By ~ 5

Author(s):

Maliheh Barazandeh Tehrani ◽

Melika Namadchian ◽

Sedigheh Fadaye Vatan ◽

Effat Souri

Keyword(s):

Simultaneous Determination ◽

Spectrophotometric Method ◽

Dosage Forms ◽

Clindamycin Phosphate ◽

Pharmaceutical Dosage Forms

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Spectrophotometric analysis of Azithromycin and its pharmaceutical dosage forms: Comparison between Spectrophotometry and HPLC

Dhaka University Journal of Pharmaceutical Sciences ◽

10.3329/dujps.v12i2.21981 ◽

2015 ◽

Vol 12 (2) ◽

pp. 171-179 ◽

Cited By ~ 3

Author(s):

Nahid Sharmin ◽

Nazia Sultana Shanta ◽

Sitesh C Bachar

Keyword(s):

Statistical Analysis ◽

Spectrophotometric Method ◽

Dosage Form ◽

Dosage Forms ◽

Spectrophotometric Analysis ◽

Pharmaceutical Dosage Form ◽

Pharmaceutical Dosage Forms ◽

Ich Guidelines ◽

Good Accordance

A simple, reliable, precise and sensitive UV-spectrophotometric method was developed and validated for the estimation of azithromycin in pharmaceutical dosage form and compared with official USP 2010 method. The proposed method utilizes the oxidation of azithromycin with potassium permanganate to liberate formaldehyde. This formaldehyde reacts with acetone-ammonium reagent and produces yellow colored chromogen 3,5-diacetyl-2,6-dihydrolutidine. The colored solution exhibited a maximum absorption at 412 nm which can be detected with UVspectrophotometer. The method was found linear over the concentration range 80% to 120% of the working concentration (R2=0.999). The intra- and inter-day RSD (n = 6) was ? 2.0%. The developed method was validated according to ICH guidelines and values of accuracy, precision and other statistical analysis were found to be in good accordance with the prescribed values. The proposed method was successfully applied for determination of azithromycin and the results have been compared with HPLC and thus enabling the utility of this new method for routine analysis azithromycin in pharmaceutical dosage forms DOI: http://dx.doi.org/10.3329/dujps.v12i2.21981 Dhaka Univ. J. Pharm. Sci. 12(2): 171-179, 2013 (December)

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Ultra-Performance Liquid Chromatographic and Densitometric Methods for Sensitive Determination of Xipamide and Triamterene in Pure and Pharmaceutical Dosage Forms

Journal of AOAC International ◽

10.1093/jaoacint/qsab110 ◽

2021 ◽

Author(s):

N V Fares ◽

Haitham A El Fiky ◽

Amr M Badawey ◽

Maha F Abd El Ghany

Keyword(s):

Acetic Acid ◽

Flow Rate ◽

Mobile Phase ◽

Dosage Forms ◽

Hplc Method ◽

Uv Detection ◽

Pharmaceutical Dosage Forms ◽

Selective Determination ◽

Liquid Chromatographic

Abstract Background Validated UPLC method and TLC densitometric method were prescribed for determination of antihypertensive components. Objectives: To establish and validate rapid and accurate Ultra performance liquid chromatographic (UPLC) and TLC densitometric methods for determination of Xipamide and Triamterene in pure and dosage forms. Methods The first method; UPLC method, depended on using Agilent Zorbax Eclipse Plus C8 (50 mm × 2.1 mm, 1.8 μm), as the column, mobile phase composed of (acetonitrile-water) (70 + 30, v/v) adjusted by acetic acid to obtain (pH 3), 0.2 mL/min flow rate and UV detection at 231.4 nm. The second method was a thin layer chromatography (TLC) densitometric method, separation was achieved by using toluene-methanol-ethyl chloride-acetic acid (7 + 2 + 1 + 0.2, v/v/v) as the mobile phase, pre coated silica gel plates as the stationary phase and UV detection at 300.0 nm. Results The obtained results were validated and statistically compared with official and reported methods. The obtained results showed high accuracy and reproducible results with excellent mean recoveries for both drugs. Conclusions The UPLC method showed shorter retention time for both Xipamide (0.88 min) and Triamterene (0.63 min), lower detection limit less than 0.055 µg/mL for both drugs with high selectivity, decreased injection volume (1 µL) and lower flow rate other than any HPLC method. Both proposed methods were sensitive, selective, and effectively applied to pure and dosage forms (Epitens®). Highlights Unprecedented sensitive, rapid, and reproducible UPLC and TLC methods were developed for selective determination of mixture of Xipamide and Triamterene with LOD less than 0.076 µg/mL for both drugs.

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