scholarly journals Spectrophotometric Determination of Zidovudine in Pharmaceutical Dosage Forms

2012 ◽  
Vol 9 (1) ◽  
pp. 89-92
Author(s):  
J. Sudhakar Reddy ◽  
MD. S. Maqsood Ahmed ◽  
I. E. Chakravarthy ◽  
K. Prabhavathi
Keyword(s):  
Statistical Analysis ◽  
Dosage Form ◽  
Dosage Forms ◽  
Ion Pair ◽  
Reagent Blank ◽  
Pharmaceutical Dosage Forms ◽  
Extractable Complex ◽  
Bulk Drug ◽  
Tablet Dosage

A simple, sensitive and economical spectrophotometric method has been developed for the determination of zidovudine in commercial dosage forms. The method was based on the formation of chloroform extractable complex of zidovudine with wool fast blue. The absorbance of the extractable ion pair complex is measured at the wavelength of maximum absorbance 590 nm against the reagent blank treated similarly. Statistical analysis proves that the proposed methods are reproducible and selective for the estimation of zidovudine in bulk drug and in its tablet dosage form.

scholarly journals Spectrophometric Determination of Nelfinavir Mesylate

2006 ◽  
Vol 3 (2) ◽  
pp. 78-82 ◽  
Author(s):  
K. Vanitha Prakash ◽  
Jangala Venkateswara Rao
Keyword(s):  
Ferric Chloride ◽  
Dosage Form ◽  
Potassium Ferricyanide ◽  
Reagent Blank ◽  
Spectrophotometric Methods ◽  
Bluish Green ◽  
Nelfinavir Mesylate ◽  
Bulk Drug ◽  
Tablet Dosage

Two new simple, sensitive, rapid and economical Spectrophotometric Methods (A and B) have been developed for the determination of Nelfinavir Mesylate in pharmaceutical bulk and tablet dosage form. The method A is based on the reaction of Nelfinavir with ferric chloride, potassium ferricyanide and hydrochloric acid to form a bluish green colored chromogen. The Method B is based on the formation of blood red colored chromogen with Ferric chloride and 1,10-phenanthroline. The absorbances of the chromogen were measured at their respective wavelength of maximum absorbance against the corresponding reagent blank. The proposed methods have been successfully applied to the analysis of the bulk drug and its tablet dosage form. The methods have been statistically evaluated and were found to be precise and accurate.

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

2015 ◽  
Vol 12 (2) ◽  
pp. 171-179 ◽  
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)

Determination of Favipiravir from Pharmaceutical Dosage Form by Extractive Ion Pair Complex Colorimetric Method

2021 ◽  
pp. 321-323
Author(s):  
Rajan V. Rele ◽  
Prathamesh P. Tiwatane
Keyword(s):  
Standard Deviation ◽  
High Precision ◽  
Dosage Form ◽  
Colorimetric Method ◽  
Standard Addition ◽  
Dosage Forms ◽  
Ion Pair ◽  
Pharmaceutical Dosage Form ◽  
Pharmaceutical Dosage Forms

Simple sensitive and accurate extractive colorimetric method was developed for the estimation of favipiravir in Pharmaceutical dosage forms. The method was based on the formation of colored ion pair complexes by the drugs with thiocynate ions. These ion pair complexes were quantitatively extracted under the experimental condition in chloroform. The absorbance values were measured at 618 respectively. The proposed method was validated statistically. A recovery of method was carried out by standard addition methods. The Beer’s law ranges were found to be 1-12μg/ml, respectively. The low values of standard deviation and percentage RSD indicate high precision of method. Hence the method is useful for routine estimation of favipiravir in tablets respectively.

scholarly journals Spectrophotometric Determination of Raloxifene Hydrochloride in Pharmaceutical Formulations

2007 ◽  
Vol 4 (1) ◽  
pp. 79-82 ◽  
Author(s):  
M. Mathrusri Annapurna ◽  
M. E. Bhanoji Rao ◽  
B. V. V. Ravi Kumar
Keyword(s):  
Ferric Chloride ◽  
Dosage Form ◽  
Pharmaceutical Formulations ◽  
Reagent Blank ◽  
Spectrophotometric Methods ◽  
Maximum Absorbance ◽  
Bulk Drug ◽  
Raloxifene Hydrochloride ◽  
Tablet Dosage

Three new simple, sensitive, rapid and economical spectrophotometric Methods (A, B and C) have been developed for the determination of Raloxifene Hydrochloride in pharmaceutical bulk and tablet dosage form. Method A is based on the formation of yellow colored chromogen with 0.1N Sodium hydroxide exhibiting maximum absorbance against the corresponding reagent blank. The method B is based on the reaction of Raloxifene with Ferric chloride and 1, 10-phenanthroline to form blood red colored chromogen. The method C is based on the formation of blood red colored chromogen with Ferric chloride and 2, 2' bipyridyl. The absorbencies of the chromogens were measured at their respective wavelength of maximum absorbance against the corresponding reagent blank. The proposed methods have been successfully applied to the analysis of the bulk drug and its tablet dosage form. The methods have been statistically evaluated and were found to be precise and accurate.

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

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.  

scholarly journals Uv Spectrophotometric Methods for Determination of Sofosbuvir in Pure Form and Pharmaceutical Dosage Forms in Presence of Its Alkaline Degradate

2020 ◽  
pp. 12-25
Author(s):  
Zeinab Adel Nasr ◽  
Noha S. Said ◽  
Sawsan A. Abdel-Razeq
Keyword(s):  
Good Accuracy ◽  
Dosage Forms ◽  
Difference Spectra ◽  
Pharmaceutical Dosage Forms ◽  
Spectrophotometric Methods ◽  
Good Linearity ◽  
Ratio Difference ◽  
Accuracy And Precision ◽  
Tablet Dosage

Aims: Two spectrophotometric methods were developed and validated for the determination of sofosbuvir in presence of its alkaline degradate. Study Design: Ratio difference and ratio derivative methods were assisted for determination of sofosbuvir in presence of its alkaline degradate, laboratory-prepared mixtures and in tablet dosage forms. Place and Duration of Study: Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy (Girls), Al - Azhar University, between December 2019 and January 2020. Methodology: Two analytical methods were achieved and validated for the quantitative determination of Sofosbuvir in presence of its alkaline degradate. The first method was ratio difference (RD) method, where the UV absorption spectra of different concentrations of sofosbuvir were divided by the spectrum of a certain concentration (15 µg mL-1) as a devisor of its alkaline degradate to get the ratio difference spectra. Afterwards, the peak amplitudes difference between 253.7 and 243.5 nm were measured. The second method was the ratio derivative (1DR) method, where the first derivative of the ratio spectra (1DR) was obtained and its amplitude was measured at 247 and 268 nm. Good linearity was obtained over the concentration range of 3-15 µg mL-1 for the proposed methods. The proposed procedures were adopted for the selective determination of intact Sofosbuvir in presence of up to 80% of its degradation product. Sofosbuvir was exposed to different conditions as alkaline, acidic and oxidative degradation. Results: The proposed methods were developed and validated with good linearity range of 3-15 µg mL-1 for both methods, and also with good accuracy and precision. And the obtained results were statistically compared to those obtained by the reported method. Conclusion: Sofosbuvir was successfully determined by the proposed ratio difference and ratio derivative methods in bulk powder, laboratory prepared mixtures and tablet dosage form with good accuracy and precision. The methods were validated according to ICH guidelines. The results obtained were compared with those of the reported method and were found to be in good agreement.

scholarly journals Development and validation of a new spectrofluorimetric method for the determination of some beta-blockers through fluorescence quenching of eosin Y. Application to content uniformity test

2016 ◽  
Vol 14 (1) ◽  
pp. 258-266 ◽  
Author(s):  
Sayed M Derayea ◽  
Mahmoud A Omar ◽  
Mohamed Aboel-Kasem Abdel-Lateef ◽  
Ahmed I. Hassan
Keyword(s):  
Fluorescence Quenching ◽  
Beta Blockers ◽  
Dosage Forms ◽  
Ion Pair ◽  
Content Uniformity ◽  
Eosin Y ◽  
Pharmaceutical Dosage Forms ◽  
Quenching Effect ◽  
Spectrofluorimetric Method

AbstractA simple, rapid, sensitive and economic spectrofluorimetric method has been developed and validated for determination of some β-adrenergic blocking agents namely; betaxolol hydrochloride (BTX), carvedilol (CAR), labetalol hydrochloride (LBT), nebivolol hydrochloride (NEB) and propranolol hydrochloride (PRO). The method is based on the quenching effect of the cited drugs on the fluorescence intensity of eosin Y at pH 3.4 (acetate buffer). The fluorescence quenching is due to the formation of an ion-pair complex and was measured without extraction at 545 nm (λex. 301.5 nm). The factors affecting the formation of the ion-pair complex were carefully studied and optimized. Under the optimal conditions, the linear ranges for the relationship between the fluorescence quenching value and the concentration of the investigated drugs were 100-2500, 150-2500 and 50-2250 ng mL-1 for (BTX, CAR), (LBT, NEB) and (PRO) respectively. The method was validated according to ICH guidelines and was applied for determination of the cited drugs in pharmaceutical dosage forms with excellent recoveries. In addition, content uniformity testing of some commercial dosage forms was checked by the proposed method.

Stability Indicating LC Assay Method for the Determination of Famciclovir in Bulk Drug and Pharmaceutical Dosage Forms

2008 ◽  
Vol 68 (9-10) ◽  
pp. 837-841 ◽  
Author(s):  
Ch. B. V. Narasimha Raju ◽  
Gunanidhi Panda ◽  
G. Nageswara Rao
Keyword(s):  
Dosage Forms ◽  
Assay Method ◽  
Pharmaceutical Dosage Forms ◽  
Stability Indicating ◽  
Bulk Drug
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