Validated RP-TLC Method with Densitometry for Assay of Finasteride in Simple Pharmaceutical Dosage Form

Author(s): Malgorzata Dolowy*, Agata Piontek, Alina Pyka-Pajak

Journal Name: Current Pharmaceutical Analysis

Volume 14 , Issue 3 , 2018

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Graphical Abstract:


Background: Finasteride is a medically important compound belonging to 4-azasteroids which are widely used in the treatment of benign prostatic hypertrophy. Therefore, there is a need to find a simple, cost effective and sensitive method for the determination of finasteride in commercially available tablet dosage form.

Objective: To develop and validate a rapid and simple RP-TLC method combined with densitometry for the quantification of finasteride in tablet dosage form containing 5 mg of active substance alone.

Method: Chromatographic analysis was performed on aluminum plates precoated with silica gel 60 RP18F254 using mobile phase consisting of 1,4-dioxane-water in volume composition 35:15. Densitometric scanning was done in the absorbance mode at 212 nm. Validation of proposed RP-TLC method was carried out according to the ICH guidelines.

Results: Validation data indicated that the proposed RP-TLC method was accurate and precise with coefficient of variation CV, to be less than 2% in both cases. The method was linear over the range of 1.00÷4.00 µg/spot with correlation coefficient equal to 0.9981. The LOD and LOQ were found to be 0.24 and 0.74 µg/spot, respectively. Assay results of finasteride in marketed tablets using this method were in agreement with label claim and also with pharmacopoeial requirements.

Conclusion: A new, simple and economical RP-TLC method with densitometry developed in this study can be found to be suitable for routine analysis of finasteride in simple tablet dosage form containing this active substance.

Keywords: Finasteride, steroids, chromatography, RP-TLC, densitometry, validation.

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Article Details

Year: 2018
Published on: 10 April, 2018
Page: [298 - 305]
Pages: 8
DOI: 10.2174/1573412913666170608100215
Price: $65

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