Mice of different groups were given each an intraperitoneal injection of peiminine and its 5 derivatives in different doses separately. Values of LD_50 and 95% confidence interval of the 6 drugs were then calculated with the Bliss method.

• 以小鼠急性死亡率为指标,求浙贝乙素各衍生物的LD50和LD50的95%25可信区间。