Development and validation of a stability-indicating liquid chromatography method for the determination of dabigatran etexilate in capsules.

An RP-LC method was developed and validated for the determination of dabigatran etexilate in a capsule formulation. The LC method was carried out on a Zorbax C18 column (250 x 4.6 mm id).

A high-throughput liquid chromatography tandem mass spectrometry method for the comparative determination of fluticasone propionate by reversed-phase liquid chromatography and capillary electrophoresis methods in pharmaceutical nasal sprays.

A simple, specific, rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the analysis of fluticasone propionate (FP) in pharmaceutical formulations was developed and validated using deflazacort as internal standard (IS). The LC-MS/MS method was carried out on a C8 column (50 mm) with a mobile phase consisted of methanol : water (95 : 5, v/v) 100 mM formic acid-50 mM ammonium acetate (90 : 5 : 5, v/v/v). The mass spectrometry method was performed employing positive atmospheric pressure chemical ionization technique, operating in multiple reaction monitoring mode.

Evaluation of the changes in hemostatic parameters induced by etoricoxib in rat model.

The effects of etoricoxib on blood coagulation parameters were evaluated, along with acetylsalicylic acid, in male Wistar rats. Blood samples were collected at the end of the first, second, third and fourth weeks of the administration period and the plasma concentrations of etoricoxib determined by liquid chromatography-tandem mass spectrometry; the samples were also used for the analysis of the hematological parameters. There were no significant changes in the platelet count and fibrinogen levels, and a decrease by 1.