Cinidon-ethyl is a herbicide that inhibits the conversion of protoporphyrinogen IX to protoporphyrin IX, disrupting the tetrapyrrole biosynthesis process and resulting in the accumulation of protoporphyrin IX and generation of reactive oxygen species (ROS). It can induce the expression of peroxidase and defense-related genes in wheat. Additionally, Cinidon-ethyl triggers light-dependent ethylene and ethane release, tissue dehydration, and necrosis in susceptible broadleaf weeds. It is used in studies focusing on the control of broadleaf weeds in wheat fields.