Synonyms: Pregna-1,4-diene-3,20-dione,11b,17,21-trihydroxy-, 21-pivalate(6CI,7CI,8CI); 11b,17a-Dihydroxy-21-pivaloyloxypregna-1,4-diene-3,20-dione;Mecortolon; PTMA; Prednisolone 21-pivalate; Prednisolone 21-trimethylacetate;Prednisolone pivalate; Prednisolone trimethylacetate; Ultracortenol;Ultracorterenol; Vecortenol