2-Acetyldibenzothiophene 22439-58-3 5-17-10-00470 (Beilstein Handbook Reference) BRN 0150949 Dibenzothien-2-yl methyl ketone Ethanone, 1-(2-dibenzothienyl)- (9CI) KETONE, 2-DIBENZOTHIENYL METHYL NSC 220077