(2,4-Dichlorophenoxy)butyric acid .gamma.-(2,4-Dichlorophenoxy)butyric acid 2,4-D Butyric 2,4-D butyric acid 2,4-DB 2,4-DM 4-(2,4-DB) 4-(2,4-Dichlorophenoxy)butyric acid 94-82-6 Butanoic acid, 4-(2,4-dichlorophenoxy)- Butoxone Butyrac Butyrac 118 Butyrac 200 Butyric acid, 4-(2,4-dichlorophenoxy)- Embutox Embutox klean-up Legumex Legumex D NSC70337 WLN: QV3OR BG DG