Synonyms: 4-(2,4-dichlorophenoxy)butanoic acid- 3,5-dibromo-4-hydroxybenzonitrile(1:1);Bromoxynil 2,4-DB;AC1Q25MF;AC1L554I;AR-1F5724;4-(2,4-Dichlorophenoxy)butanoic acid mixt. with 3,5-dibromo-4-hydroxybenzonitrile;3,5-dibromo-4-hydroxybenzonitrile; 4-(2,4-dichlorophenoxy)butanoic acid;Butanoic acid, 4-(2,4-dichlorophenoxy)-, mixt. with 3,5-dibromo-4-hydroxybenzonitrile