A novel polyfunctional neutral organophosphorus compound, 2-(diphenylphosphoryl)-N, N- diethyl-3-(1-phenyl-1 H-1, 2, 3-triazol-4-yl) propanamide (I), was synthesized and studied as an extractant for Pd (II), Ln (III), U (VI), and Th (IV) from HNO3 solutions. The influence of