Original articleMean centering of ratio spectra and successive derivative ratio spectrophotometric methods for determination of isopropamide iodide, Trifluoperazine (cas 117-89-5) hydrochloride and Trifluoperazine (cas 117-89-5) oxidative degradate

Add time:09/01/2019    Source:sciencedirect.com

Two sensitive, selective and precise stability indicating methods for the determination of isopropamide iodide (ISO), Trifluoperazine (cas 117-89-5) hydrochloride (TPZ) and trifluoperazine oxidative degradate (DEG) were developed and validated. Method A is a successive derivative ratio spectrophotometric one, which depends on the successive derivative of ratio spectra in two steps using 0.1 N HCl as a solvent and measuring TPZ at 250.4 and 257.2 nm, ISO at 223 and 228 nm and DEG at 210.6, 213 and 270.2 nm. Method B is mean centering of ratio spectra which depends on using the mean centered ratio spectra in two successive steps and measuring the mean centered values of the second ratio spectra at 322, 355 and 339 nm for TPZ, ISO and DEG, respectively. Factors affecting the developed methods were studied and optimized, moreover, they have been validated as per ICH guidelines and the results demonstrated that the suggested methods are reliable, reproducible and suitable for routine use with short analysis time. Statistical analysis of the two developed methods with the reported one using F- and Student’s t-test showed no significant difference regarding accuracy and precision.

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