Used as a stable isotope-labeled internal standard in analytical chemistry for the accurate quantification of aflatoxin B1 in food, feed, and biological samples. Its primary application is in mass spectrometry-based methods, where it helps correct for matrix effects and instrument variability, ensuring high precision and reliability in detecting trace levels of aflatoxin contamination. Commonly employed in food safety testing, pharmaceutical research, and toxicological studies to monitor exposure and assess health risks.