scholarly journals UV Spectrophotometric Method for the Estimation of Valacyclovir HCl in Tablet Dosage Form

2009 ◽  
Vol 6 (3) ◽  
pp. 814-818 ◽  
Author(s):  
M. Ganesh ◽  
C. V. Narasimharao ◽  
A. Saravana Kumar ◽  
K. Kamalakannan ◽  
M. Vinoba ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Spectrophotometric Method ◽  
Dosage Form ◽  
Dosage Forms ◽  
Form Solution ◽  
Solid Dosage ◽  
Percentage Recovery ◽  
Accuracy And Precision ◽  
Tablet Dosage

A simple, sensitive, highly accurate UV spectrophotometric method has been developed for the determination of valacyclovir in bulk and tablet dosage form. Solution of valacyclovir in 0.1N HCl shows maximum absorbance at 255 nm. Beer’s law was obeyed in the concentration range of 5-25 mcg mL-1with 1.0910x104mol-1cm-1, the slope, intercept, correlation coefficient, detection and quantitation limits were also calculated. The proposed method has been applied successfully for the analysis of the drug in pure and in its tablets dosage forms. Result of percentage recovery and placebo interference shows that the method was not affected by the presence of common excipients. The percentages assay of valacyclovir HCl in tablet was 99.82%. The method was validated by determining its sensitivity, accuracy and precision which proves suitability of the developed method for the routine estimation of valacyclovir in bulk and solid dosage form.

scholarly journals UV Spectrophotometric Method for the Estimation of Tadalafil in Bulk and Tablet Dosage form

2010 ◽  
Vol 7 (3) ◽  
pp. 833-836 ◽  
Author(s):  
Mohammad Yunoos ◽  
D.Gowri Sankar ◽  
B.Pragati Kumar ◽  
Shahul Hameed
Keyword(s):  
Correlation Coefficient ◽  
Spectrophotometric Method ◽  
Dosage Form ◽  
Dosage Forms ◽  
Form Solution ◽  
Solid Dosage ◽  
Percentage Recovery ◽  
Accuracy And Precision ◽  
Tablet Dosage

A simple, sensitive, precise and highly accurate UV spectrophotometric method has been developed for the determination of tadalafil in bulk and tablet dosage form. Solution of tadalafil in methanol shows maximum absorbance at 284 nm. Beer’s law was obeyed in the concentration range of 2-20 mcg mL-1with 1.65x104mol-1cm-1, the slope, intercept, correlation coefficient, detection and quantitation limits were also calculated. The proposed method has been applied successfully for the analysis of the drug in pure and in its tablets dosage forms. Result of percentage recovery and placebo interference shows that the method was not affected by the presence of common excipients. The method was validated by determining its sensitivity, accuracy and precision which proves suitability of the developed method for the routine estimation of tadalafil in bulk and solid dosage form.

scholarly journals Spectrophotometric Method for the Determination of Nebivolol Hydrochloride in Bulk and Pharmaceutical Formulations

2010 ◽  
Vol 7 (2) ◽  
pp. 445-448 ◽  
Author(s):  
A. Lakshmana Rao ◽  
K. R. Rajeswari ◽  
G. G. Sankar
Keyword(s):  
Correlation Coefficient ◽  
Antihypertensive Drug ◽  
Spectrophotometric Method ◽  
Pharmaceutical Formulations ◽  
Molar Absorptivity ◽  
Dosage Forms ◽  
Percentage Recovery ◽  
Nebivolol Hydrochloride ◽  
Tablet Dosage

A simple, sensitive, highly accurate spectrophotometric method in UV region has been developed for the determination of nebivolol hydrochloride in bulk and pharmaceutical formulations. Nebivolol hydrochloride is an antihypertensive drug, which shows maximum absorbance at 281 nm with apparent molar absorptivity of 5.37208 × 103mol-1cm-1. Beer’s law was obeyed in the concentration range of 4-60 μg/mL. The slope, intercept and correlation coefficient were also calculated. The proposed method has been successfully used for the analysis of the drug in pure and its tablet dosage forms. Results of percentage recovery shows that the method was not affected by the presence of common excipients. The percentage assay of nebivolol hydrochloride was 98.75 and 99.02 respectively. The method was validated by sensitivity and precision which proves suitability of proposed method for the routine estimation of nebivolol in bulk and pharmaceutical formulations.

scholarly journals Spectrophotometric Estimation of Amoxicillin Trihydrate in Bulk and Pharmaceutical Dosage Form

2008 ◽  
Vol 5 (s2) ◽  
pp. 1114-1116 ◽  
Author(s):  
K. Prakash ◽  
P. Narayana Raju ◽  
K. Shanta Kumari ◽  
M. Lakshmi Narasu
Keyword(s):  
Correlation Coefficient ◽  
Spectrophotometric Method ◽  
Phosphate Buffer ◽  
Dosage Form ◽  
Molar Absorptivity ◽  
Pharmaceutical Dosage Form ◽  
Amoxicillin Trihydrate ◽  
Bulk Drug ◽  
Tablet Dosage

New simple, sensitive, rapid, reproducible and economical spectrophotometric method have been developed for the determination of amoxicillin trihydrate in pharmaceutical bulk and tablet dosage form using citro phosphate buffer pH 7.2. The system obeys Lambert-Beer's law at 231 nm in the concentration range 2.5-50 μg/m. Molar absorptivity, correlation coefficient and Sandell's sensitivity values were found to be 1.0020 x 104mol-1cm,-10.9996 and 0.03906 μg cm-2respectively. 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 UV Spectrophotometric Estimation of Levoceterizine Dihydrochloride in Bulk and Dosage Form

2010 ◽  
Vol 7 (s1) ◽  
pp. S414-S418
Author(s):  
P. Mamatha ◽  
P. V. Anantha Lakshmi ◽  
P. L. Prasunamba
Keyword(s):  
Correlation Coefficient ◽  
Spectrophotometric Method ◽  
Dosage Form ◽  
Ultra Violet ◽  
Molar Absorptivity ◽  
Distilled Water ◽  
Maximum Absorbance ◽  
Bulk Drug ◽  
Tablet Dosage

A new simple, rapid, accurate, sensitive and precise spectrophotometric method in ultra violet region has been developed for the determination of levoceterizine dihydrochloride (LCTZ) in bulk drug and tablet dosage form. Levoceterizine dihydrochloride exhibited maximum absorbance at 232 nm with apparent molar absorptivity of 1.5104×104in double distilled water. Beer's law was found to be obeyed in the concentration range of 4-20 µg mL-1. Correlation coefficient was found to be 0.9998. Results of the analysis were validated statistically and by recovery studies. The proposed method is useful for the routine estimation of LCTZ in bulk and tablet dosage form.

UV Spectrophotometric Method Development and Validation of Darunavir in bulk and Solid Dosage Form

2021 ◽  
pp. 3262-3264
Author(s):  
Varsha Tegeli ◽  
Avinash Birajdar ◽  
Vinod Matole
Keyword(s):  
Spectrophotometric Method ◽  
Dosage Form ◽  
Method Development ◽  
Uv Spectrum ◽  
Solid Dosage ◽  
Highly Sensitive ◽  
Method Development And Validation ◽  
Development And Validation ◽  
Tablet Dosage

Objective: A new, simple, sensitive, precise, reproducible UV visible spectrophotometric method was developed for the determination of Darunavir in Tablet dosage form with¬¬¬ 0.1N HCl. Method: The method is based on the formation of a colorless complex. The UV spectrum of Darunavir in 0.1N HCl showed maximum wavelength at 298nm. Beer’s law is valid in the concentration range of 10-60µg/ml. this method was validated for linearity, accuracy, precision, assay, ruggedness and robustness. Results: The method has demonstrated excellent linearity over the range of 10-60µg/ml with the regression equation y=0.0113x+0.0098, and regression coefficient i.e. r2=0.9992 moreover, the method was found to be highly sensitive with LOD (1.85µg/ml) and LOQ (5.62µg/ml). Conclusion: Based on the results the proposed method can be successfully applied for the assay of Darunavir in various tablet dosage forms.

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.

Determination of Sucralose by Controlled UV Photodegradation Followed by UV Spectrophotometry

2013 ◽  
Vol 96 (3) ◽  
pp. 603-606
Author(s):  
Mohd Idris ◽  
V Jayathirtha Rao ◽  
Deepak Middha ◽  
Sudhir Kumar Shukla ◽  
Tulsidas Ramachandra Rao Baggi
Keyword(s):  
Correlation Coefficient ◽  
Alkaline Medium ◽  
Spectrophotometric Method ◽  
Calibration Curve ◽  
Artificial Sweeteners ◽  
Uv Spectrophotometry ◽  
Medium Ph ◽  
Accuracy And Precision ◽  
Uv Photodegradation

Abstract A simple and time-efficient UV spectrophotometric method was developed for the determination of sucralose in artificial sweeteners. The procedure is based on the UV spectrophotometric determination of the photodegraded product at 270 nm in alkaline medium (pH 12). LOD for this method was 0.02 g/L, and the calibration curve was found to obey Beer's law in the concentration range of 0.1 to 1.2 g/L, with a correlation coefficient (R2) value of 0.9977. The proposed method was studied for accuracy and precision.

scholarly journals Simultaneous UV Spectrophotometric Estimation of Amlodipine and Chlorthalidone in Bulk and Combined Tablet Dosage Form

2019 ◽  
pp. 468-472
Author(s):  
Sunil More ◽  
Ashpak Tamboli ◽  
Snehal Patil ◽  
Amol Vhanmane
Keyword(s):  
Spectrophotometric Method ◽  
Mobile Phase ◽  
Dosage Form ◽  
Spectroscopic Method ◽  
Simultaneous Equation ◽  
Ich Guidelines ◽  
Combined Estimation ◽  
Tablet Dosage ◽  
Different Levels

There is not a single analytical methods appeared in the literature for combined estimation of Amlodipine and Chlorthalidone in tablets dosage form. Attempts were made to develop a simple, precise and accurate Simultaneous UV spectroscopic method of Amlodipine and Chlorthalidone in bulk and Amlodac CH tablet dosage form by using simultaneous equation method. UV spectrophotometric method was developed and validated as per ICH guidelines using methanol as mobile phase. Amlodipine and Chlorthalidone individually follows the Beer-Lamberts law over concentration range 2.5-12.5μg/ml and 6.25-31.5μg/ml, Regression of coefficient was found to be r2=0.999 and r2=0.999 respectively. The percentage recovery was found in the range of 98% to 102% at three different levels. The proposed method was successfully applied for the determination of Amlodipine and Chlorthalidone in tablets dosage form as per ICH guidelines the result of the analysis were validated statistically and were found to be satisfactory.

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