17978-77-7 EINECS 241-902-6 NSC 379436 Praseodymium, tris(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionato-kappaO,kappaO')- Tris(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyloctane-3,5-dionato-O,O')praseodymium