This certified reference material (CRM), the N-(5-hydroxypentyl) metabolite of THJ-2201, is primarily utilized in analytical laboratories for the detection and quantification of this specific metabolite in biological samples. It serves as a critical tool in forensic toxicology and drug testing, enabling accurate identification and measurement of the metabolite in urine, blood, or other matrices, which indicates exposure to the parent synthetic cannabinoid THJ-2201. Researchers and regulatory bodies rely on it to validate analytical methods, ensuring compliance with legal and safety standards. Its application is essential in studying drug metabolism, pharmacokinetics, and the development of reliable diagnostic assays.