Used as a stable isotope-labeled internal standard in analytical chemistry for the accurate quantification of zearalenone in food, feed, and biological samples. Its primary application is in mass spectrometry-based methods, such as LC-MS/MS, where it corrects for matrix effects, instrument variability, and losses during sample preparation. This ensures high precision and reliability in detecting and measuring zearalenone contamination, which is critical in food safety, mycotoxin research, and regulatory compliance.