Simultaneous Determination of Drotaverine hydrochloride and Aceclofenac in Tablet Dosage Form by Spectrophotometry
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Department of Pharmaceutical Analysis, A.I.S.S.M.S. College of Pharmacy, Kennedy Road, Near R.T.O., Pune - 411 001
Santosh V. Gandhi   

Department of Pharmaceutical Analysis, A.I.S.S.M.S. College of Pharmacy, Kennedy Road, Near R.T.O., Pune - 411 001
Publish date: 2017-10-06
Eurasian J Anal Chem 2009;4(2):184–190
Three accurate, precise, sensitive and economical procedures for simultaneous estimation of Drotaverine hydrochloride and Aceclofenac in tablet dosage form have been developed. The methods employed were Absorbance Ratio Method (I), Simultaneous equation method (Vierodt’s method) (II) and First Order Derivative Spectroscopic Method (III). The first method employs 230 nm as λ1 (Isobestic point) and 242 nm as λ2 (λmax of Drotaverine hydrochloride) for formation of equations. The second method employs estimation of a drug concentration by selecting λmax where the absorbance of these drugs is maximum. So λmax for Drotaverine hydrochloride and Aceclofenac is 242 nm and 273 nm respectively. The third method is based on first order derivative spectroscopy. Wavelengths 250 nm and 226 nm were selected for the estimation of the Drotaverine hydrochloride and Aceclofenac respectively. Both the drugs obey Beer’s law in the concentration range 10-50 μg mL-1. The results of analysis have been validated statistically and by recovery studies.
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