Abstract: The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.

Abstract: The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.

Abstract: The present invention provides for new crystal forms of oxcarbazepine, more particularly oxcarbazepine Forms B, C, D and E. The present invention further provides processes for preparation of these forms. Form B is prepared by evaporating the solvents from a solution of oxcarbazepine in toluene and dichloromethane. Form B is also obtained by immediately cooling the solution of oxcarbazepine and toluene. Cooling the same solution at a slower rate, but still fairly rapidly, results in oxcarbazepine Form C. Cooling the same solution at even a slower rate results in another Form, oxcarbazepine Form D. Oxcarbazepine Form E, a solvate of chloroform, is obtained by precipitating a solution of oxcarbazepine and chloroform. The present invention also provides processes for converting one of the newly discovered crystal forms of oxcarbazepine into another crystal form, including Form A, which is in the prior art.

Abstract: The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.

Abstract: The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.

Abstract: The present invention relates to a method for the production of particles of nano-materials being transition metals and alloys; metal oxides; and ceramic compositions having a small nanosize, i.e. about 1-6 nm. The method comprises a synthesis in the solutions of complex liquids from suitable precursors, which precursors are selected from suitable surfactants and alkoxides, by a suitable chemical reaction under mild conditions; and preparing from said materials fine colloids dispersed in various polymer solutions. The water in the solution is preferably non freezing water, the mild conditions are atmospheric pressure and a temperature range of room temperature to 70° C., and the reaction condition is selected among a hydrolysis, reduction and exchange process.

Abstract: The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.

Abstract: The present invention provides for new crystal forms of oxcarbazepine, more particularly oxcarbazepine Forms B, C, D and E. The present invention further provides processes for preparation of these forms. Form B is prepared by evaporating the solvents from a solution of oxcarbazepine in toluene and dichloromethane. Form B is also obtained by immediately cooling the solution of oxcarbazepine and toluene. Cooling the same solution at a slower rate, but still fairly rapidly, results in oxcarbazepine Form C. Cooling the same solution at even a slower rate results in another Form, oxcarbazepine Form D. Oxcarbazepine Form E, a solvate of chloroform, is obtained by precipitating a solution of oxcarbazepine and chloroform. The present invention also provides processes for converting one of the newly discovered crystal forms of oxcarbazepine into another crystal form, including Form A, which is in the prior art.