Used primarily as a metabolite reference standard in pharmaceutical research and forensic toxicology. It aids in the study of olanzapine metabolism, helping to understand drug efficacy and patient response variations. Commonly employed in bioanalytical assays to quantify metabolite levels in plasma, serum, or urine during clinical trials or therapeutic drug monitoring. Also supports the development and validation of analytical methods such as LC-MS/MS for accurate detection of olanzapine breakdown products.