Product Details – Thyroidget

Thyroidget is a branded form of levothyroxine (L-thyroxine, T4), a synthetic analog of the endogenous thyroid hormone thyroxine. It is classified as a thyroid hormone analog. 

In preclinical and experimental models, levothyroxine serves as a prohormone that is enzymatically converted into triiodothyronine (T3), the biologically active thyroid hormone. This conversion enables detailed examination of thyroid hormone metabolism and receptor-mediated transcriptional activity in in vitro studies and controlled laboratory systems.

Mechanism of Action

Levothyroxine (T4) undergoes enzymatic deiodination by iodothyronine deiodinases (primarily D1 and D2) to form triiodothyronine (T3) in research models. T3 subsequently binds to thyroid hormone receptors (TRα and TRβ), which are nuclear transcription factors.

Upon receptor binding, T3-receptor complexes interact with thyroid hormone response elements (TREs) on DNA, modulating transcription of target genes involved in cellular metabolism and mitochondrial function.

In experimental models, this mechanism enables investigation of gene expression pathways regulating oxidative metabolism, mitochondrial biogenesis, and cellular energy homeostasis. The compound is frequently used to study hormone-dependent transcriptional regulation and endocrine feedback systems in preclinical settings.

Properties

• Molecular Formula: C15H11I4NO4
• Molecular Weight: 776.87 g/mol 
• CAS Number: 51-48-9
• PubChem CID: 5819
• Synonyms: Levothyroxine, L-thyroxine, L-T4, T4

Research Applications

Applications in in vitro and preclinical models include:

• Investigation of thyroid hormone receptor (TR) binding and transcriptional regulation
• Study of deiodinase enzyme activity and T4-to-T3 conversion mechanisms
• Analysis of mitochondrial function and oxidative metabolism at the cellular level
• Evaluation of gene expression pathways regulated by thyroid hormone signaling
• Use as a reference compound in endocrine system research models

Its well-characterized role as a prohormone makes levothyroxine a critical tool for studying hormone activation, receptor interactions, and downstream molecular signaling pathways in controlled experimental environments.

Why Choose BehemothLabz to Buy Thyroidget

Choose BehemothLabz for research-focused quality and consistency. Our Thyroidget are manufactured to meet rigorous standards suitable for laboratory and experimental use.

Each batch undergoes third-party testing to verify purity, composition, and consistency. This ensures that researchers receive a product aligned with strict analytical requirements.

We offer secure ordering systems and reliable shipping options for both domestic and international customers. Our processes are designed to maintain confidentiality and protect customer data at every stage.

With BehemothLabz, you are selecting a product developed to support precision and reliability in research environments.

Disclaimer: This information is for educational purposes. We do not allow the human consumption of our products. All our products are sold for laboratory and research experiments. 

References: 

• Alexander, E. K., Marqusee, E., Lawrence, J., Jarolim, P., Fischer, G. A., & Larsen, P. R. (2004). Timing and Magnitude of Increases in Levothyroxine Requirements during Pregnancy in Women with Hypothyroidism. New England Journal of Medicine, 351(3), 241–249. https://doi.org/10.1056/nejmoa040079
• Negro, R., Formoso, G., Mangieri, T., Pezzarossa, A., Dazzi, D., & Hassan, H. (2006). Levothyroxine Treatment in Euthyroid Pregnant Women with Autoimmune Thyroid Disease: Effects on Obstetrical Complications. The Journal of Clinical Endocrinology & Metabolism, 91(7), 2587–2591. https://doi.org/10.1210/jc.2005-1603
• Gullo, D., Latina, A., Frasca, F., Moli, R. L., Pellegriti, G., & Vigneri, R. (2011). Levothyroxine monotherapy cannot guarantee euthyroidism in all athyreotic patients. PLoS ONE, 6(8), e22552. https://doi.org/10.1371/journal.pone.0022552