74738-17-3

Agricultural fungicide.

Fenpiclonil is a systemic and contact fungicide that provides protective control of seed-borne pathogens of cereals such as snow mould and bunt caused by Fusarium spp., Tilletia caries, Septoria nodorum, etc. It also controls leaf spot, brown foot rot and ear blight in non-cereal crops.

ChEBI: A member of the class of pyrroles carrying cyano and 2,3-dichlorophenyl substituents at positions 3 and 4 respectively. A fungicide used mainly to control seed-borne pathogens in cereal crops.

Limited data are available in the open literature. Information presented in this summary was abstracted from the data evaluation published by the Pesticide Safety Directorate (PSD, 1993). Fenpiclonil is stable to hydrolytic and soil degradation. Photolytic degradation is rapid. Hydroxylation and oxidation of the pyrrole ring are the primary metabolic reactions in plants and animals (Scheme 1).

Fenpiclonil (1) is stable to hydrolytic degradation (up to 70 °C) over the pH range 5-9.
Fenpiclonil degraded rapidly in water (pH 7) when samples were irradiated under a mercury arc lamp (>290 nm) with an estimated DT₅₀ values of <1 hour. At least eight unidentified degradation products were observed