METHOD OF DETERMINING CINNARIZINE Russian patent published in 2011 - IPC G01N33/15 G01N21/00 A61K31/495 

FIELD: chemistry.

SUBSTANCE: method for quantitative determination of cinnarizine involves spectrophotometry of solutions of cinnarizine and a standard comparison sample, and then calculating results. Solutions of the substance to be determined (concentration 0.0005 g/ml) and the comparison sample are prepared. The solvent for preparing the test samples is 0.1 M hydrochloric acid and the comparison sample is potassium dichromate. Optical density of the solutions of the substance to be determined and the comparison sample is measured on a spectrophotometre with wavelength 254 nm. Results are calculated using a formula by entering a conversion factor equal to 0.2714 into the formula.

EFFECT: invention reduces analysis errors, unifies the method and reduces the cost of analysis.

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