2-(4-Nitrophenyl)butyric acid 2-(p-Nitrophenyl)butyric acid 7463-53-8 BUTYRIC ACID, 2-(p-NITROPHENYL)- Benzeneacetic acid, alpha-ethyl-4-nitro- (9CI) EINECS 231-256-3 NSC 404387 NSC 68215 alpha-Ethyl-4-nitrobenzeneacetic acid