2,4,5-T, ISOBUTYL ESTER 2,4,5-Trichlorophenoxyacetic acid isobutyl ester 4938-72-1 Acetic acid, (2,4,5-trichlorophenoxy)-, 2-methylpropyl ester Acetic acid, (2,4,5-trichlorophenoxy)-, isobutyl ester Caswell No. 881S EINECS 225-580-4 EPA Pesticide Chemical Code 082062 HSDB 4495 Isobutyl 2,4,5-T Isobutyl 2,4,5-trichlorophenoxyacetate