9-Oxoxanthene 9-Xanthenone 90-47-1 9H-Xanthen-9-one 9H-Xanthene, 9-oxo- Benzophenone oxide Dibenzo-.gamma.-pyrone Diphenylene ketone oxide E 6 Genicide NSC14978 WLN: T C666 BO IVJ Xanthen-9-one Xanthene, 9-oxo- Xanthone