| abstract |
The invention concerns the field of organic chemistry and more particularly that of therapeutic chemistry. More precisely, it concerns a method for obtaining aqueous formulations of easily oxidizable active principles, in particular phenols, stable over a prolonged period, which consists in advanced bubbling deoxygenation with an inert gas and/or vacuumizing them, while protecting them against possible oxygen uptake by maintaining them under inert gas atmosphere, by filling under inert gas into bottles previously made air-free by inert gas blowing, then in subjecting them when they are being closed to a vacuum so as to obtain in the bottle a pressure of not more than 65.000 Pa, thereby obtaining solutes having a residual oxygen concentration in the solution, less than 2 ppm, and preferably of the order of 1 ppm and even 0.5 ppm. The invention is useful in particular for preparing injection preparations having an oxygen content in the solution, less than 2 ppm. |