Buprofezin exhibits a wide range of bioactivities and significant insecticidal properties. It functions as an estrogen receptor alpha agonist while acting as an antagonist for thyroid hormone receptor beta, farnesoid X receptor, androgen receptor, peroxisome proliferator-activated receptor gamma, and retinoid X receptor alpha signaling pathways. Additionally, it activates peroxisome proliferator-activated receptor delta, peroxisome proliferator-activated receptor gamma, vitamin D receptor, antioxidant response element (ARE), and human pregnane X receptor (PXR) signaling pathways.
In terms of insecticidal activity, Buprofezin is highly effective against Bemisia tabaci (sweet potato whitefly), showing potency across various life stages by affecting offspring sex ratio, longevity, and egg hatch rate, with higher concentrations yielding greater mortality rates. It is also efficacious against various hybrids, generations, and buprofezin-resistant populations of Bemisia tabaci.
The compound demonstrates significant insecticidal effectiveness against Encarsia inaron, particularly when applied to larval stages at 31.25 ppm, reducing sex ratio, egg-laying rate, and longevity. When applied to cucumber plants infested with Encarsia inaron, it reduces adult parasitoid emergence, especially at pupal stages.
Noteworthy is its acute toxicity observed in female adult Anagrus nilaparvatae, with 29.4% mortality from oral administration and minimal residual toxicity (1.1%) from compound-treated rice leaves. Its acute contact toxicity LC50 for adult Anagrus nilaparvatae is above 1000.0 mgAi/L, indicating relatively low contact toxicity.
Buprofezin also shows substantial activity against first-instar larvae of Cheumatopsyche brevilineata with an EC50 value of 0.181 ug/mL and demonstrates a lower, yet notable, toxicity towards Daphnia magna. The compound has a high partition coefficient (log KOW of 4.3), indicating good solubility in both water and organic phases.
Furthermore, the compound affects Nilaparvata lugens (brown planthopper) by impacting lifespan, ovariole development, egg maturity, hatchability, and oviposition. It induces mortality in brown planthopper adults and fifth-instar nymphs in a concentration-dependent manner over 7 days of exposure..
Note: Summary generated by AI. Data source: ChEMBL 