Even though "keto" is a standard prefix in organic chemistry, the 1989 recommendations of the Joint Commission on Biochemical Nomenclature discourage the application of the prefix "keto" for steroid names, and favor the prefix "oxo" (e.Egzama, sedef hastalığı kadar cilt emrazının tedavisinde topikal steroidler kullanılır.Kanser Tedavisi: Len