1,4-Pentadien-3-one, 1,5-bis(2-furanyl)- 1,4-Pentadien-3-one, 1,5-di-2-furanyl- 1,4-Pentadien-3-one, 1,5-di-2-furyl- 1,5-Difuryl-1,4-pentadien-3-one 886-77-1 DIFA Difurfurylideneacetone NSC24065