Certain features of will be down for maintenance Saturday afternoon/evening, February 24th starting at 3:00 pm CT until 9:00 pm CT.

Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Stable Isotopes

About Isotec

ISOTEC™ is the world's largest producer of enriched stable isotopes. We offer isotopically-labeled products for agriculture, NMR, breath tests, nutrition and metabolism, in addition to numerous other labeled isotope products. We also perform custom synthesis for stable isotopes. ISOTEC™ routinely engages in the multiple step synthesis of complex labeled molecules including, metabolites and steroids.