(Z)-3-Nonen-1-ol, as a key component of pheromone or aggregation signals of certain Coleoptera and Diptera insects (e.g., fruit flies and bark beetles), regulates the aggregation or mating behavior of conspecifics through specific release, and has been developed as a highly effective entrapment agent through stereoselective synthesis for applications in monitoring and trapping systems for orchard and storage pests.