Also Called: 2,4-DB (ISO); 4-(2,4-dichlorophenoxy)butyric acid; 2 , 4-DB; 2 , 4-dichlorophenoxybutyric acid; 2,4-dichlorophenoxybutyric acid = 2,4-DB; 2,4-DB (ISO) [4-(2,4-Dichlorophenoxy) butyric acid];2,4-D butyric acid;2,4-DB (ISO) 4-(2,4-dichlorophenoxy)butyric acid;2,4-dichlorophenoxybutyric acid;4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID (2,4-DB);4-(2, 4-DICHLOROPHENOXY) BUTYRIC ACID;2,4-DB;4-(2,4-二溴苯氧基)丁酸;4-(2,4-Dichlorphenoxy)buttersäure;Butanoic acid, 4-(2,4-dichlorophenoxy)-