JWH 203, particularly its 3-chlorophenyl isomer, is primarily studied in research settings for its interaction with cannabinoid receptors. It is often used in scientific studies to understand the binding mechanisms and effects of synthetic cannabinoids on the CB1 and CB2 receptors. This helps in exploring the pharmacological properties of cannabinoid compounds and their potential therapeutic applications. Additionally, it serves as a reference compound in forensic and toxicological analyses to identify and differentiate synthetic cannabinoids in various samples. Its use is strictly limited to controlled research environments due to its psychoactive properties and potential health risks.