Epirubicin Hydrochloride is a drug used in the treatment of various cancers. It is particularly important in the treatment of breast cancer.
A purity test was made for acetone, methanol, ethanol, 1-propanol, 1,4-dioxane (internal standard).

The standard was diluted with N,N-dimethylformamide. The resolution of acetone and 1,4-dioxane (internal standard) and the relative standard deviation of acetone, methanol, ethanol, and 1-propanol were calculated; excellent results were obtained.