Five kinds of organic solvents including ethyl acetate, butyl acetate, toluene, xylene and chloroform were selected preliminarily as the organic phase in this two-phase system through the screening tests of steroid solubility. 通过对甾体溶解度的测定,发现乙酸乙酯,乙酸丁酯,甲苯,二甲苯、氯仿对甾体的溶解度较大,初步选定作为两相体系中的有机相组成。