20140135344 | ARIPIPRAZOLE TYPE I MICROCRYSTAL, ARIPIPRAZOLE SOLID PREPARATIONS, AND PREPARATION METHOD - A method for preparing an aripiprazole type I microcrystal, including the following steps: dissolving aripiprazole in an acidifier, acquiring a medicament-having acid solution; adding an alkalizer while stirring, then adding water or aqueous ethanol 10 to 60 wt % while stirring, and separating by precipitation the aripiprazole type I microcrystal. Furthermore, a method for preparing a solid preparation having the aripiprazole type I microcrystal, an aripiprazole microcrystal having an average particle size of less than 24 μm, and a solid preparation having the microcrystal. The method for preparing the aripiprazole type I microcrystal allows reduced pollution and loss, great safety, easy and convenient, reduced use of organic solvents, obviated need for demanding process conditions (such as cooling condition) and apparatus, low cost, and facilitated applicability in industrialized manufacturing. This solid preparation provides great stability, solubility, and bioavailability, reduced individual differences, and reduced content of related substances. | 05-15-2014 |
20120322753 | PRODUCTION METHOD OF SOLID PREPARATION AND THE SOLID PREPARATIONS PRODUCED BY THE METHOD - The production method prepares a solid preparation by dissolving water-insoluble and/or water indissolvable alkaline active pharmaceutical ingredient in an acidifier-containing acid solution to obtain medicated acid liquid; homogeneously mixing alkalizer, adjuvants and the medicated acid liquid, and carrying out wet granulation. The alkalizer is a reagent to reduce the acidity of the mixture of the alkalizer and the medicated acid liquid relative to the acidity of the medicated acid liquid. The preparation method avoids the problems in mechanical pulverization, such as environmental pollution, great loss and serious security risks. This method is simply operated, has high safety coefficient and is convenient for industrialized production. Also disclosed is the solid preparation produced by the method. The solid preparation produced by the method has better dissolution performance than that produced by prior art, and has better or at least equivalent stability and content uniformity with prior art. | 12-20-2012 |