1320-15-6 2,4-DB isoocytl ester 4-(2,4-Dichlorophenoxy)butyric acid isooctyl ester Butanoic acid, 4-(2,4-dichlorophenoxy)-, isooctyl ester Butyric acid, 4-(2,4-dichlorophenoxy)-, isooctyl ester Caswell No. 316D EINECS 215-297-4 EPA Pesticide Chemical Code 030863 Isooctyl 4-(2,4-dichlorophenoxy)butyrate