The invention relates to novel salts of 1-(3-methyl-2-oxo-2,3-dihydro-1,3-benzoxazol-6-yl)-2,4-dioxo-3- [(1R)- 4-(trifluormethyl)-2,3-dihydro-1H-inden-1-yl]-1,2,3,4-tetrahydr opyrimidin-5-carboxylic acid of the formula (I), in particular amino acid salts such as lysine salt and alkali metal salts such as sodium salt and potassium salt, to a method for producing same, to medication containing same, and to the use thereof in treating diseases.Sales novedosas del ácido 1-(3-metil-2-oxo-2,3-dihidro-1,3-benzoxa zol-6-iI)-2,4-dioxo-3-[(1R)-4-(trifluorometil)-2,3-dihidro-1H-ind en-1-iI]-1,2,3,4-tetrahidropirimidin-5-carboxílico de fórmula (I), particularmente sales de aminoácidos como la usina o de metales alcalinos como el sodio o el potasio. Procesos para prepararlas. Medicamentos que las comprenden. Su uso en el control de diversas enfermedades.