1,3-BUTANEDIONE, 1-(o-NITROPHENYL)- 1,3-Butanedione, 1-(2-nitrophenyl)- (9CI) 1-(o-Nitrophenyl)-1,3-butanedione 3-07-00-03493 (Beilstein Handbook Reference) 5463-78-5 BRN 1877907 NSC 21484