Clodinafop Propargyl

Clodinafop Propargyl,炔草酯 other name: propynyl (R)-2-[4-[(5-chloro-3-fluoro-2-pyridinyl)oxy]phenoxy]propanoate

CAS No.: [105512-06-9 ]

Molecular Formula: C17H13ClFNO4

Clodinafop-propargyl is a post-emergence herbicide that is absorbed by the leaves of plants. Clodinafop-propargyl converts from the ester to the active acid and then Clodinafop-propargyl inhibits the enzyme acetyl co-enzyme A carboxylase (ACCase), which is responsible for synthesising lipids.

Treatment causes yellowed leaves, stunted growth and death within eight days of application. The product is suitable for spring or autumn application, although the speed of action is slower in cooler conditions. It is effective against wild oats up to the six-leaf stage, allowing a wide window of application and is highly selective in wheat. The use of an additive, such as mineral oil, is recommended. The product is used with the safener, cloquintocet-mexyl, in wheat, rye and triticale.

Clodinafop-propargyl does not control broadleaf weeds, but it can be tank-mixed with a wide range of broadleaf herbicides, including bromoxynil, chlorsulfuron, fluoroxypyr, MCPA, prosulfuron, dicamba, 2,4-D, clopyralid and metsulfuron-methyl.

Clodinafop-propargyl is a member of the aryloxyphenoxy propionate chemical family.  It acts as a systemic herbicide that acts on post-emergent weeds such as selected grasses.  It does not act on broad leaved weeds.  It is applied to the foliar parts of the weeds and is absorbed through the leaves.  This foliar acting grass weed killer is translocated to the meristematic growing points of the plant where it interferes with the production of fatty acids required for plant growth.  Grass weeds controlled include wild oats, rough meadow-grass, green foxtail, barnyard grass, Persian darnel, volunteer canary seed. It also provides moderate control of Italian rye-grass. It is suitable for use on the following crops – all varieties of wheat, autumn-sown spring wheat, rye, triticale and durum wheat. 


Fatty acid synthesis inhibitor, by inhibition of acetyl CoA carboxylase (ACCase).

Mode of action
Post-emergence, systemic grass herbicide. Phytotoxic symptoms appear within 1-3 weeks, affecting meristematic tissue.

Used for post-emergence control of annual grasses, including Avena, Lolium, Setaria, Phalaris and Alopecurus, in cereals, at 30-60 g/ha.

Low toxicity to spring and winter wheat.

Formulation types EC; WP.

Our Technical Material (TC) of Clodinafop Propargyl have the specification as below

Items Specification
Appearance offwhite powder
Content 95% min.
Chirality (ee) 95% % min.
Acidity (as H2SO4) 0.3% max.
Acetone Insoluble Matter 0.3% max.

GHS complaint Safety Data Sheet (SDS) for commercial product of Clodinafop Propargyl is available uopn requested.