Surat

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ABOUT AUTHORS:
Priyanka P. Atodariya*, Hasumati A. Raj, Vineet C. Jain
*Shree Dhanvantary Pharmacy Collage, Kim,
Surat, Gujarat, India
*atodariya.priyanka@yahoo.com

ABSTRACT:
The simple spectroscopic method has been developed for simultaneous estimation of Lamotrigine and Clozapine in synthetic mixture. Absorbance Correction Method involves the measurement of absorption at two wavelengths 307 nm (l_maxfor Lamotrigine) and 360 nm (l_max for Clozapine). The method was found linear between the range of 1-5 µg/ml for Lamotrigine and 6-30 µg/ml for Clozapine for method. The accuracy and precision was determined and validated statistically. Both the method showed good reproducibility and recovery with %RSD less than 1. The method was found to be rapid, specific, precise and accurate and can be successfully applied for the routine analysis for Lamotrigine and Clozapine in bulk and combined dosage form.

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ABOUT AUTHORS:
*Ashif I. Bhim¹, Farhana V. Buchiy¹, Hasumati A. Raj¹, Vineet C. Jain^2
1Department of Qaulity Assurane, Shree Dhanvantary Pharmacy College, Kim, Surat, Gujarat, India.
²Department of Pharmacognocy, Shree Dhanvantary Pharmacy College, Kim, Surat, Gujarat, India.
bhimiqbal23@gmail.com

ABSTRACT
A simple, accurate and precise spectroscopic method was developed for simultaneous estimation of Itopride Hydrochloride and Lansoprazole in synthetic mixture using first order derivative zero-crossing method. Itopride Hydrochlorideshowed zero crossing point at 278.12nmwhile Lansoprazole showed zero crossing point at 244.58nm. The dA/dλ was measured at 244.12 nm for Itopride Hydrochloride and 278.12nmfor Lansoprazole and calibration curves were plotted as dA/dλ versus concentration, respectively. The method was found to be linear (r2>0.999) in the range of 5-25μg/ml for Itopride Hydrochloride at 244.58nm. The linear correlation was obtained (r2>0.996) in the range of 5-25 μg/ml for Lansoprazole at 278.12 nm. The limit of determination was 0.155μg/ml and 0.059μg/ml forItopride Hydrochloride and Lansoprazole, respectively. The limit of quantification was 0.472μg/ml and 0.179μg/ml for Itopride Hydrochloride and Lansoprazolerespectively. The accuracy of these method were evaluated by recovery studies and good recovery result were obtained greater than 99% shows first order derivation zero crossing. The method was successfully applied for simultaneous determination of Itopride Hydrochloride and Lansoprazolein binary mixture.

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ABOUT AUTHROS:
Vandana M Patel*, Hasumati A Raj, Vineet C Jain
*Shree Dhanvantary College of Pharmacy,
Kim, Surat, Gujarat, India.
vandanapatel@gmail.com

ABSTRACT
A simple, accurate and precise spectroscopic method was developed for simultaneous estimation of Amlodipine besylate and Simvastatin in synthetic mixture using Absorbance correction  method. At  360.80  nm (λmax of Amlodipine besylate) Simvastatin has zero absorbance so Amlodipine besylate is directly estimate at 360.80 nm. At 237.60 nm (λmax of Simvastatin) both drugs have some absorbance so Simvastatin is estimate at 237.60 nm using absorbance correction method. The method was found to be linear (r2>0.999) in the range of 5-10 μg/ml for Amlodipine besylate at 360.80 nm. The linear correlation was obtained (r2>0.999) in the range of 5-10 μg/ml for Simvastatin at 237.60 nm. The limit of determination was 0.17 μg/ml and 0.10μg/ml for Amlodipine besylate and Simvastatin, respectively. The limit of quantification was 0. 54μg/ml and 0. 32μg/ml for Amlodipine besylate  and Simvastatin, respectively. The accuracy of these method were evaluated by recovery studies and good recovery result were obtained greater than 99%. The method was successfully applied for simultaneous determination of Amlodipine besylate and Simvastatin in binary mixture.

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