A compound selected from taurolidine or taurultam for use in a method selected from: (i) a method for inducing apoptotic death of a neoplastic cell, which comprises contacting said cell with an amount inducing apoptosis of said compound ； (ii) a method for inducing apoptotic death of a neoplastic cell, comprising contacting neoplastic cells and normal cells with said compound at a concentration sufficient to induce the death of said neoplastic cells preferably against said normal cells； (iii) a method for inhibiting the growth of an autologous neoplastic cell in a mammal, comprising administering to said mammal a composition comprising said compound； (iv) a method for inhibiting the growth of a drug resistant neoplastic cell in a mammal, comprising administering to said mammal a composition comprising said compound； (v) a method for killing a neoplastic cell in a mammal, which comprises administering to said mammal a composition comprising said compound, and wherein said composition is administered so that it directly contacts the surface of said neoplastic cell a a dose sufficient to induce the death of the neoplastic cell by apoptosis； (vi) a method for purging a population of bone marrow cells from ex vivo neoplastic cells, comprising contacting said population with a composition comprising said compound； wherein said neoplastic cells is a tumor selected from the group consisting of breast cancer, prostate cancer, pancreatic cancer, lung cancer and gastric cancer.Un compuesto seleccionado de la taurolidina o el taurultamo para su uso en un método seleccionado de: (i) un método para inducir la muerte apoptótica de una célula neoplásica, que comprende poner en contacto dicha célula con una cantidad inductora de la apoptosis de dicho compuesto； (ii) un método para inducir la muerte apoptótica de una célula neoplásica, que comprende poner en contacto células neoplásicas y células normales con dicho compuesto a una concentración suficiente para inducir la muerte de di
