scholarly journals DEVELOPMENT AND VALIDATION OF STABILITY-INDICATING RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF THEOPHYLLINE AND MONTELUKAST SODIUM IN BULK AND PHARMACEUTICAL DOSAGE FORM

INDIAN DRUGS ◽  
2020 ◽  
Vol 57 (09) ◽  
pp. 53-59
Author(s):  
Girija Dandu ◽  
Basu Venkateswara Reddy

The present study describes the development and validation of a new stability indicating RP-HPLC method for simultaneous estimation of elbasvir and grazoprevir in bulk and pharmaceutical dosage form. The chromatographic separation was done by using reverse phase YMC column (4.6 x 250mm, 5μm).The mobile phase used was mixture of HPLC grade water acetonitrile (70:30V/V) at flow rate of 1ml/ min in isocratic mode and detection was carried out using PDA detector at 244nm.The developed method showed a good linearity in the range of 100-500μg/mL for elbasvir and 200-1000 μg/mL for grazoprevir with regression co-efficient of 0.999 for both the drugs. The % recovery of drugs was found to be 100.1% for elbasvir and 100.38% for grazoprevir. The proposed stability indicating method was accurate, precise, robust, stable and specific. The developed method was validated in accordance with ICH guidelines.


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