A synthetic steroid, C21H26O5, similar to cortisone that is used as an antiallergic, immunosuppressive, and anticancer drug and as an anti - inflammatory agent in the treatment of rheumatoid arthritis.

• 波尼松合成类固醇，C21H26O5，与用作抗过敏、免疫抑制和抗癌药，并在风湿性关节炎的治疗中作为消炎药的可体松相似