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Ester Definition: An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Examples: Ethyl acetate is an ester. The hydrogen on the carboxyl group of acetic acid is replaced with an ethyl group. Article. Chemistry.
Triclopyr Ester. Like triclopyr amine, triclopyr ester is a growth regulator-type herbicide. Triclopyr ester-containing herbicide products used by commercial applicators usually contain 43.6% or 9.81% (acid) triclopyr, and they are sold in 2.5 gal or larger containers.These products are available only from agricultural supply stores.riclopyr Ester. Like triclopyr amine, triclopyr ester is a growth regulator-type herbicide. Triclopyr ester-containing herbicide products used by commercial applicators usually contain 43.6% or 9.81% (acid) triclopyr, and they are sold in 2.5 gal or larger containers.