10-Thioxanthenone 5-oxide 10H-Dibenzo[b,e]thiopyran-10-one 5-oxide 7605-15-4 9H-Thioxanthen-9-one, 10-oxide NSC252141 Thioxanthen-9-one, 10-oxide Thioxanthone 10-oxide Thioxanthone S-oxide Thioxanthone sulfoxide