This topic has carried on two developments to OX, after withdraws the separation purification system to result in the intermediate DX ketonic ester, and carried on the freezing and drying medicine in powder form for injections to take shape the craft research. 本课题对DX进行了二次开发,经提取分离纯化制得中间体DX酮酯,并进行了冻干粉针的成型工艺研究。