The present invention provides crystalline –2-hydroxy-3-methyl-butyryl)-1—1-amino-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepin-2-one, a crystalline anydrate and dihydrates thereof, compositions comprising –2-hydroxy-3-methyl-butyryl)-1—1-amino-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepin-2-one, its crystalline anhydrate or dihydrate, and methods for using the same. In order to increase the efficiency of the optoelectronic component, reflectors are provided in the cavity in the region around the semiconductor chip. A renewal schedule allocates to each data item a renewal interval for renewal of the data item.