compounds and methods for modulating the activity of thrombopoietin

COMPOUNDS AND METHODS FOR modulation thrombopoietin ACTIVITY. Described herein are aryl-hydrazino substituted compounds, pharmaceutical compositions comprising the same, methods for modulating the activity of a thrombopoietin receptor using the same methods to identify compounds as modulators of thrombopoietin receptor, and methods of treating diseases by administering a compound of the invention to a patient in need thereof.