六甲蜜胺（Ａｌｔｒｅｔａｍｉｎｅ）是抗肿瘤药，结构与烷化剂三乙撑蜜胺（ＴＥＭ）相似，是一种嘧啶类抗代谢药物。其含量是按干燥品来计算，通常检查药品中的水份及其它挥发性物质是用干燥失重法测定［１］。但在实验过程中发现：（１）六甲蜜胺在加热过程中有升华现象... Altretamine is an antineoplastic drug whose structure is similar to the alkylating agent triethylenemelamine (TEM) and is a pyrimidine antimetabolite. Its content is calculated on the basis of dry goods, usually check the water and other volatile substances in the medicine is determined by the method of loss on drying [1]. However, during the experiment found that: (1) altretamine melamine in the heating process has the phenomenon of sublimation ...