A synthetic steroid,C21H28O5,similar to hydrocortisone and used in various compounds as an anti - inflammatory,immunosuppressive,antiallergic,and anticancer drug.

• 波尼松龙，氢化波尼松合成类固醇，C21H28O5，类似于氢化可体松，用在各种化合物中作消炎药、免疫抑制药、抗过敏和抗癌药