Quick Details:

Product Name:	L-Thyroxine
Synonyms:	3,5,3' ,5' -tetraiodothyronine;beta-[(3,5-diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl]alanine;l-3,5,3' ,5' -tetraiodothyronine;l-t4;o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosin;o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodotyrosine;t4(hormone);tetraiodothyronine
CAS:	51-48-9
MF:	C15H11I4NO4
MW:	776.87
EINECS:	200-101-1
Melting point:	235 °C
Mol File:	51-48-9.mol

Levothyroxine Description:

L-thyroxine is a synthetic thyroid hormone that is chemically identical to thyroxine (T4), which is naturally secreted by the follicular cells of the thyroid gland. It is used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer.

One of the thyroid hormones involved in the maintenance of metabolic homeostasis. Synthesized and stored as amino acid residues of thyroglobulin, the major protein component of the thyroid follicular colloid. Synthesis and secretion are regulated by the pituitary hormone (TSH). Deiodinated in peripheral tissues to the active metabolite, liothyronine. The D-form has very little activity as a thyroi d hormone, but has been used to treat hyperlipidemia.

Specification:

Levothyroxine, also known as L-thyroxine, is a synthetic thyroid hormone that is chemically identical to thyroxine (T4), which is naturally secreted by the follicular cells of the thyroid gland. It is used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer. Like its naturally secreted counterpart, levothyroxine is a chiral compound in the L-form. The related drug dextrothyroxine (D-thyroxine) was used in the past as a treatment for hypercholesterolemia (elevated cholesterol levels) but was withdrawn due to cardiac side effects

It is on the World Health Organization's List of Essential Medicines, the most important medications needed in a basic health system.