Molecular formula：C₂₃H₁₈ClFN₂O₄

Chemical structure：

Physical and chemical properties:

Mol. wt. 440.9 Form Light brown, odourless, fine granular powder. M.p. 77.0–78.5 °C B.p. Decomposes V.p. 1.51 × 10^-1 mPa (25 °C) Kow logP = 5.45 (pH 7, 20 °C) S.g./density 1.39 Solubility In water 6.87 × 10^-4 g/l (pH 7, 20 °C). In acetone, 1,2-dichloroethane, ethyl acetate, methanol and xylene >250, n-heptane 2.32, n-octanol 41.9 (all in g/l, 20 °C). Stability Stable at 54 °C.

TOXICOLOGY

Oral Acute oral LD50 for rats >2000 mg/kg. Skin and eye Acute percutaneous LD₅₀ for rats >2000 mg/kg. Not a skin irritant; slightly irritating to eyes.  Inhalation LC₅₀ (4 h) for rats >2.61 mg/l.