Eflornithine(Difluoromethylornithine)通过对鸟氨酸脱羧酶的不可逆抑制作用，抑制多胺生物合成。它是一种化疗保护剂，可阻止血管生成。其生物半衰期为8小时。 Eflornithine(Difluoromethylornithine) inhibits polyamine biosynthesis by the selective, irreversible inhibition of ornithine decarboxylase (ODC). A chemoprotective agent that blocks angiogenesis. Its biological half-life is 8 hours. A cell-permeable, anticancer agent that acts as a specific and irreversible inhibitor of ornithine decarboxylase (ODC), the rate-limiting enzyme in polyamine biosynthesis. Inhibits B16 melanoma-induced angiogenesis in ovo and proliferation of vascular endothelial cells in vitro.