METHOD OF DICLOFENAC SODIUM QUANTITATION Russian patent published in 2008 - IPC G01N33/15 G01N21/33 A61K31/196 

FIELD: medicine.

SUBSTANCE: invention refers to medicine and can be used in analytical laboratories for standardisation and quality assurance of medical products. Solutions of defined substance and the standard reference solution are prepared. The 0.1 M sodium hydroxide solution is used as a dissolvent for preparation of a defined solution, and as the standard reference solution - potassium chromate. Measure optical density of a defined solution and reference potassium chromate solution using spectrophotometer. Calculation of results is performed under the formula entering recalculation factor in it.

EFFECT: allows increasing reproducibility of results of definition, sensitivity of the analysis, reducing labour input, an analysis error, excluding use of toxic reactants and unifying analysis techniques.

5 ex