YK11 SARM ((17α,20 E) 17 α- 17, 20 - [(1 - Methoxyethyleneidene) bis (oxy)] -3-oxo-19 - norpregna - 4, 20 - diene - 21 - carboxy Methyl acid) is a chemically designed myostatin inhibitor for medical reasons. SARM YK11 is the most potent myostatin inhibitor on the market. YK11 was first studied in 2011 …