Tris(2-methyl-2-phenylpropyl) tin 3,5-dinitrobenzoatehas is synthesized by the reaction of fenbutatin oxide with 3,5-dinitrobenzoic acid and is characterized by means of IR,(~1H,~(13)C and ~(119)Sn) NMR,elemental analysis and X-ray diffraction. The tin atom has a distorted tetrahedral geometry.The test shows the compound is stable under 75 ℃ and displayed strong in vitro anti-tumor activity against three human tu...