105512-06-9

Clodinafop-propargyl is a foliar-absorbed aryloxyphenoxypropionate herbicide which has the capacity to inhibit the lipid biosynthesizing enzyme, acetyl coenzyme-A-carboxylase.
Clodinafop-propargyl is a member of the Oxyphenoxy acid ester chemical class, which includes the active ingredients fluazifop-butyl, fenoxaprop-ethyl, diclofop methyl, quizalofop-ethyl and haloxyfop-methyl.

Pure Clodinafop-propargyl is colorless crystal, vapor pressure (25℃)3.19×10-3mPa, Solubility (25℃): water 4.0mg/L, ethyl alcohol 97 mg/L, acetone 880 mg/L, methyl benzene 690mg/L, n-hexane 0.0086 mg/L. Distribution coefficient (octane/water): KOWlogP=3.9(25℃). Clodinafop-propargyl can inhibit the synthesis of ester-like biology. It can be used to control amur foxtail, oat grass, avena sterilis, green bristlegrass and other weeds.

Herbicide.

Herbicides for weed control in wheat.

ChEBI: A carboxylic ester resulting from the formal condensation of the carboxy group of clodinafop with the hydroxy group of prop-2-yn-1-ol. It is widely used as a herbicide for the control of annual grass weeds in cereal crops.

The commercial production of clodinafop-propargyl involves a multi-step synthesis that centres on forming the active herbicidal ester from its precursor compounds. The process typically begins with the preparation of the chiral acid intermediate, (R)-2-[4-(5-chloro-3-fluoropyridin-2-yloxy)phenoxy]propanoic acid, which is then esterified with propargyl alcohol to yield clodinafop-propargyl. This reaction is carried out under controlled conditions using suitable catalysts and solvents to ensure high yield and enantiomeric purity, as only the R-enantiomer is biologically active.

Clodinafop-propargyl is to inhibit the activity of acetyl-CoA carboxylase in plants. It is a systemic conductive herbicide, absorbed by the leaves and sheaths of plants, transmitted by phloem, and accumulated in meristems of plants. In this case, acetyl-CoA carboxylase is inhibited, and fatty acid synthesis is stopped. So cell growth and division cannot proceed normally, and lipid-containing structures such as membrane systems are destroyed, leading to plant death.

a) Mammalian toxicity : WHO Classification : Class III slightly hazardous”
b) Environmental toxicity : It is non-toxic to fish, birds and bees.
Shelf life :Two years under normal storage conditions (Tech grade and Formulation)

Herbicide