Development of the “Dissolution” test for bisoprolol tablets

Abstract

Bisoprolol is a lipophilic cardioselective β-blocker, which leads to its rapid and almost complete (90%) absorption out of the gastrointestinal tract and high bioavailability. For determination bioavailability of solid dosage forms for oral administration in the conditions of pharmaceutical companies and laboratories the "dissolution" test is performed; its results allow to judge about the technology of manufacturing the drug and its bioavailability. The test on dissolution of solid dosage forms is an integral part of measures ensuring the quality of medicines. The aim of the analysis is to develop the "dissolution" test for bisoprolol tablets by absorption spectrophotometry in the ultraviolet and visible spectra. As a result of the research, the conditions for conducting the "dissolution" test for bisoprolol fumarate tablets have been grounded: the device with the blade is used, the volume of the medium is 500 ml, the temperature of the solvent medium is 37°C, the solvent is 0.1 M hydrochloric acid, the rotation rate is 75 rpm/min, the dissolution time is 20 min. The spectrophotometric method of determination of bisoprolol fumarate in 0.1 M solution of hydrochloric acid at the wavelength of 272 nm has been developed. It has been determined that the tablet excipients do not prevent spectrophotometric determination. The results obtained have shown that for 20 minutes of dissolution more than 90% of the active substance of its label claim turns into the solution. The following validation properties do not exceed the eligibility criteria: robustness (the analytical solution is stable for an hour), linearity (a=0.97% ≤ max a, 1.92%; b=0.9931), the correlation coefficient (0.9999), accuracy (0.52% ≤ max δ, 0.96%) and repeatability (2.24% ≤ max Δas, 3.0%), precision (1.42% ≤ max Δas 3.0%), which allows us to recommend the procedure for use in pharmaceutical analysis.