2,4-DB butyl ester 4-(2,4-Dichlorophenoxy)butyric acid butyl ester 6753-24-8 Butanoic acid, 4-(2,4-dichlorophenoxy)-, butyl ester (9CI) Butyl 4-(2,4-dichlorophenoxy)butanoate Butyl 4-(2,4-dichlorophenoxy)butyrate Butyric acid, 4-(2,4-dichlorophenoxy)-, butyl ester Caswell No. 316B EINECS 229-814-6 EPA Pesticide Chemical Code 030856