METHOD OF PYRASODOL DETERMINATION Russian patent published in 2008 - IPC G01N33/15 G01N21/33 A61K31/498 

FIELD: medicine.

SUBSTANCE: invention relates to the field of medicine and can be used in control and analytic laboratories for standardisation and control of medication quality. Solutions of substance to be determined and comparison sample are prepared. As solvent for preparation of tested solutions 0.1 M solution of hydrochloric acid is used. As comparison sample phenolphthalein or benzoic acid is used. Optical density of solution of substance to be determined and comparison sample of phenolphthalein or benzoic acid are measured by spectrophotometer. Calculation of results is carried out by formula by introducing to it scaling factor. The method allows for increasing sensitivity of analysis, reproducibility of results of determination, reducing toxicity, labour-intensiveness and analysis error, unifying analysis technique.

EFFECT: increase in analysis sensitivity and reproducibility of results of determination, unification of analysis technique.

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