The RCS-4 M11 metabolite is primarily studied in forensic and toxicological research for its role in detecting and analyzing synthetic cannabinoid use. As a metabolite of RCS-4, it serves as a biomarker in urine, blood, or hair samples to confirm exposure to synthetic cannabinoids, aiding law enforcement and healthcare professionals in identifying substance abuse. Its detection is crucial for understanding the metabolic pathways of synthetic cannabinoids and assessing their impact on human health. Additionally, it is used in laboratory settings to develop and validate analytical methods for identifying novel psychoactive substances in biological samples.