Synonyms: ISV-600;Tridax;21-[4-[2,6-Bis(pyrrolidino)pyrimidin-4-yl]piperazin-1-yl]-16alpha-methyl-pregna-1,4,9(11)-triene-3,20-dione methanesulfonate hydrate;(16alpha)-21-[4-(2,6-dipyrrolidin-1-ylpyrimidin-4-yl)piperazin-1-yl]-16-methylpregna-1,4,9(11)-triene-3,20-dione methanesulfonate hydrate