(18F)RU 52461 11,17beta-Dihydroxy-6-methyl-17alpha-(3-(18F)fluoroprop-1-ynyl)androsta-1,4,6-trien-3-one 141357-52-0 Androsta-1,4,6-trien-3-one, 17-(3-fluoro-1-propynyl)-11,17-dihydroxy-6-methyl-, (11beta,17beta)- RU 52461 RU-52461