2,4-D chlorocrotyl ester 2,4-D esters 2,4-D, alpha-Chlorocrotyl ester 2,4-Dichlorophenoxyacetic acid, 4-chlorocrotonyl ester 2971-38-2 Acetic acid, (2,4-dichlorophenoxy)-, 4-chloro-2-butenyl ester Acetic acid, 2,4-dichlorophenoxy-, 4-chloro-2-butenyl ester Chlorocrotyl ester of 2,4-D Crotilin Crotiline Crotylin HSDB 2813 Krotilin Krotiline