• Elsayed I. Ali Analytical Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
  • Shehab A. Sallam Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
  • Ghada M. Hadad Analytical Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt


RP-HPLC, Pentoxyverine citrate, pH-rate profile, Britton-Robinson buffer


Objectives: The objectives of this research were to develop and validate a HPLC method for determination of Pentoxyverine citrate (PNX) and its degradant (DG).

Methods: Forced degradation studies were performed on bulk sample using alkaline (0.1M sodium hydroxide) and acid (1M hydrochloric acid. The proposed method was based on using a 150 x 4.6 mm (i. d.) (Luna, Phenomenex, Torrance, CA, USA) (5 µm particle size) reversed phase C18 column with mobile phase consisting of a mixture of methanol-10 mM sodium dihydrogen phosphate pH 4 in ratio of (60:40, v/v) and UV detection at 230 nm with flow rate of 1 mL min-1.

Results: The linear calibration range was between 10-40 mg ml-1and 10-40 mg ml-1for PNX and DG respectively. The method was found to be accurate with 100.23% and 100.07% recovery for PNX and DG respectively. The limit of detection (LOD) was found to be 3.79 x10-2μg ml-1 and 4.24 x10-2μg ml-1 for PNX and DG respectively, while the limit of quantification (LOQ) was found to be 12.62 x10-2μg ml-1 and 14.12 x10-2μg ml-1 for PNX and DG respectively. PNX was found to be most stable at a pH of 5.7.

Conclusion: The validation study of the proposed method was successfully carried out and the method was found to be suitable and economic for routine determination of PNX in pharmaceutical syrup, without any interference from the excipients, and in the presence of its acidic and alkaline degradation products.


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How to Cite

Ali, E. I., S. A. Sallam, and G. M. Hadad. “STABILITY-INDICATING LIQUID CHROMATOGRAPHY METHOD FOR THE DETERMINATION OF PENTOXYVERINE CITRATE AND ITS DEGRADANT”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, no. 10, Oct. 2014, pp. 334-40,



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