(-)-CP 55,940 is primarily used in scientific research to study the endocannabinoid system. It acts as a potent cannabinoid receptor agonist, making it valuable for investigating the effects of cannabinoids on the brain and body. Researchers utilize it to explore potential therapeutic applications, such as pain management, appetite regulation, and neuroprotection. Additionally, it serves as a tool to understand the mechanisms underlying conditions like anxiety, epilepsy, and addiction. Its high affinity for CB1 and CB2 receptors allows for detailed studies on receptor signaling pathways and their physiological roles.