115609-68-2 20-Aldehyde leukotriene B4 20-Oxoleukotriene B4 6,8,10,14-Eicosatetraenoic acid, 5,12-dihydroxy-20-oxo-, (S-(R*,S*-(E,Z,E,Z)))- Leukotriene B4-20-aldehyde Ltb4-20-aldehyde