Medical Isotopes, Inc. is a premier supplier of stable, labeled isotopic chemicals and metals as well as non-labeled chemical compounds, with isotopic labels of N15, C13, O18, and Deuterium. We specialize in labeled and unlabeled Vitamins. We list over 30,000 compounds on our website, and we also perform custom synthesis for specific compounds you may need. Our products are used throughout the scientific world, many as standards and all for medical research. We are cited in many research publications, and our compounds are used worldwide.