2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrafluoro- 527-21-9 Fluoranil Fluoroanil NSC264881 Tetrafluoro-1,4-benzoquinone Tetrafluoro-p-benzoquinone Tetrafluoroquinone p-Benzoquinone, 2,3,5,6-tetrafluoro- p-Fluoranil