3-10-00-03169 (Beilstein Handbook Reference) 5-HEXENOIC ACID, 6-(m-NITROPHENYL)-4-OXO- 5-Hexenoic acid, 6-(3-nitrophenyl)-4-oxo- (9CI) 6-(m-Nitrophenyl)-4-oxo-5-hexenoic acid 74038-57-6 BRN 3344617 NSC 81134