Photostability study of cis-configuration neonicotinoid insecticide cycloxaprid in water
Shuang Hou1, Yingying Zhuang1, Yayun Deng1
1a Shanghai Key Laboratory of Chemical Biology , School of Pharmacy, East China University of Science and Technology , Shanghai , China.
Abstract:
Cycloxaprid (CYC) is a new cis-configuration neonicotinoid insecticide, which is currently under development in China for agricultural pest control. Considering the photodegradation of CYC is important for the application of CYC in the future, the photochemical behavior of CYC in aqueous solution was herein investigated in a "merry-go-round" reactor under a 300 W high-pressure mercury lamp. Twenty-five photodegradation products were identified via UPLC-TOF-ESI-MS/MS. The results suggested that NTN32692, the precursor of CYC was the predominant photodegradation product. CYC photodegrades via a more complex mechanism than imidacloprid and four potential photodegradation pathways were proposed.


