Pasireotide diaspartate (SOM230), a long-acting cyclohexapeptide and somatostatin analog, enhances agonist activity across somatostatin receptor subtypes (sst1/2/3/4/5, with pK i values of 8.2, 9.0, 9.1, <7.0, and 9.9, respectively). This compound demonstrates antisecretory, antiproliferative, and proapoptotic activities [1] [2].