Described herein are compositions relating to cell-penetrating conjugates of formula or The compositions are capable of penetrating cells and recognizing intracellular targets (e.g., STAT3) and are, inter alia, useful for diagnostic and therapeutic purposes.本文說明涉及具有下列式之細胞穿透性耦合物的組成物:該組成物能夠穿透細胞並且識別細胞內標靶(如,STAT3)及,特別是,適用於診斷及治療之目的。