111668-89-4 16-Desmethyltirilazid 21-(4-(2,6-di-1-Pyrrolidinyl-4-pyrimidinyl)-1-piperazinyl)-pregna-1,4,9(11)-triene-3,20-dione monomethanesulfonate Desmethyl tirilazad Pregna-1,4,9(11)-triene-3,20-dione, 21-(4-(2,6-di-1-pyrrolidinyl-4-pyrimidinyl)-1-piperazinyl)-, monomethanesulfonate Trilazad mesylate U 74389 U 74389F U 74389G U-74389 U-74389F U-74389G U74389F