L-Thyroxine 13C9,15N

[13C9,15N]-L-Thyroxine is a synthetic form of the hormone thyroxine, which is produced naturally in the thyroid gland. Thyroxine plays an important role in regulating the body's metabolism, growth, and development. The addition of 13 carbon atoms and 9 nitrogen atoms to the molecule make it useful in research studies and diagnostic tests. The chemical formula for [13C9,15N]-L-Thyroxine is C15H11I4NO4, and it has a molecular weight of 776.87 g/mol. It is labeled with stable isotopes of carbon and nitrogen, which means that it does not decay over time and can be used repeatedly in experiments. [13C9,15N]-L-Thyroxine is commonly used in research studies to investigate thyroid function and metabolism. It can be used to study the absorption, distribution, and elimination of thyroxine in the body. It is also used in diagnostic tests to measure the levels of thyroxine in the blood. Patients with thyroid disorders such as hypothyroidism or hyperthyroidism may undergo testing to determine their thyroxine levels. In conclusion, [13C9,15N]-L-Thyroxine is a synthetic form of the hormone thyroxine that is labeled with stable isotopes of carbon and nitrogen. It is used in research studies to investigate thyroid function and metabolism, as well as in diagnostic tests to measure thyroxine levels in the blood. Its stability and consistent chemical properties make it a valuable tool in the field of endocrinology.