Synonyms: 2,4-Pentanedione,Th deriv. (6CI); Thorium, tetrakis(2,4-pentanedionato)- (7CI,8CI); Thorium,tetrakis(2,4-pentanedionato-O,O')-, (SA-8-11''11''1'1'''1'1''')-; Thorium,tetrakis(2,4-pentanedionato-kO,kO')-,(SA-8-11''11''1'1'''1'1''')- (9CI); NSC 4658; NSC 52335;Tetrakis(2,4-pentanedionato)thorium; Tetrakis(acetylacetonato)thorium; Tetrakis(acetylacetonato)thorium(IV);Tetrakis(acetylacetone)thorium; Thorium acetylacetonate; Thoriumtetrakis(acetylacetonate)