| abstract |
1.- Telmisartan crystalline sodium salt of the formula 1 characterized by a melting point of T = 245 ± 5 ° C. 2.- Telmisartan crystalline sodium salt according to claim 1, characterized in that in the radiological dust diagram it has, among others, the characteristic values d = 20.95 Å, 17.72 Å, 13.97 Å and 13.63 Å.3.- Telmisartan crystalline sodium salt according to one of claims 1 or 2, characterized in that it is presented in form of its solvates or hydrates, preferably in the form of its hydrates. 4.- Procedure for the preparation of the crystalline sodium salt of Telmisartan 1, characterized in that Telmisartan free acid is collected in a suitable solvent, this solution is then mixed with a suitable sodium salt, in which at least 1 mole of sodium salt is added per mole of Telmisartan, then the reaction mixture is heated for a period of 15 minutes to 2 hours, then the solution obtained is filtered tra and the filtrate, obtained in this way, are slowly added to an organic solvent that can be heated to a temperature> 40 ° C, parts of the solvent are distilled off eventually even during the addition of the aforementioned filtrate, then the concentrated solution , thus obtained, the Telmisartan sodium salt which crystallizes in this case is cooled and, if necessary, after washing with the organic solvent mentioned initially, it is dried. |