T44 is found in 22 entries

T44 as free ligands, exist in 22 entries. Examples include 1ETA, 1ETB, 1F86

Find related ligands: Stereoisomers Similar ligands Chemical Structure Search

View summary at Ligand Expo

Chemical Component Summary

Identifiers O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine
(2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodo-phenoxy)-3,5-diiodo-phenyl]propanoic acid
Formula C15 H11 I4 N O4
Molecular Weight 776.87 g/mol
Type non-polymer
Isomeric SMILES N[C@@H](Cc1cc(I)c(Oc2cc(I)c(O)c(I)c2)c(I)c1)C(O)=O
InChI InChI=1S/C15H11I4NO4/c16-8-4-7(5-9(17)13(8)21)24-14-10(18)1-6(2-11(14)19)3-12(20)15(22)23/h1-2,4-5,12,21H,3,20H2,(H,22,23)/t12-/m0/s1

Chemical Details

Formal Charge 0
Atom Count 35
Chiral Atom Count 1
Chiral Atoms C8
Bond Count 36
Aromatic Bond Count 12

Drug Info: DrugBank

DrugBank ID DB00451   (Stereoisomeric match)
Name Levothyroxine
Groups approved
Description The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (monoiodotyrosine) and the coupling of iodotyrosines (diiodotyrosine) in the thyroglobulin. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form triiodothyronine which exerts a broad spectrum of stimulatory effects on cell metabolism. [PubChem]
  • 3,3',5,5'-Tetraiodo-L-thyronine
  • 3,5,3',5'-TETRAIODO-L-thyronine
  • 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodo-L-phenylalanine
  • L-T4
  • L-Thyroxine
  • Levothyroxin
  • Levothyroxine
  • LT4
  • O-(4-Hydroxy-3,5-diidophenyl)-3,5-diiodo-L-tyrosine
  • O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine
  • T4
Salts Levothyroxine Sodium
Brand Names
  • Eltroxin
  • Eltroxin 150 Tab
  • Eltroxin Tab 100mcg
  • Eltroxin Tab 200mcg
  • Eltroxin Tab 300mcg
  • Eltroxin Tab 50mcg
  • Euthyrox
  • Levo-T
  • Levo-T 100mcg - Tab
  • Levo-T 125mcg - Tab
  • Levo-T 150mcg - Tab
  • Levo-T 200mcg - Tab
  • Levo-T 25mcg - Tab
  • Levo-T 300mcg - Tab
  • Levo-T 50mcg - Tab
  • Levo-T 75mcg - Tab
  • Levotec 100mcg Tablets USP
  • Levotec 112mcg Tablets USP
  • Levotec 125mcg Tablets USP
  • Levotec 150mcg Tablets USP
  • Levotec 175mcg Tablets USP
  • Levotec 200mcg Tablets USP
  • Levotec 25mcg Tablets USP
  • Levotec 300mcg Tablets USP
  • Levotec 50mcg Tablets USP
  • Levotec 75mcg Tablets USP
  • Levothroid
  • Levothyroxine
  • Levothyroxine Sodium
  • Levothyroxine Sodium for Injection
  • Levoxyl
  • Np Thyroid 30
  • Np Thyroid 60
  • Np Thyroid 90
  • PMS-levothyroxine Sodium Tab 100mcg
  • PMS-levothyroxine Sodium Tab 125mcg
  • PMS-levothyroxine Sodium Tab 150mcg
  • PMS-levothyroxine Sodium Tab 200mcg
  • PMS-levothyroxine Sodium Tab 25mcg
  • PMS-levothyroxine Sodium Tab 300mcg
  • PMS-levothyroxine Sodium Tab 50mcg
  • PMS-levothyroxine Sodium Tab 75mcg
  • Synthroid
  • Synthroid Liq Inj 500mcg/vial USP
  • Synthroid Tab 100mcg USP
  • Synthroid Tab 112mcg USP
  • Synthroid Tab 125mcg USP
  • Synthroid Tab 150mcg USP
  • Synthroid Tab 175mcg USP
  • Synthroid Tab 200mcg USP
  • Synthroid Tab 25mcg USP
  • Synthroid Tab 300mcg Tab
  • Synthroid Tab 50mcg USP
  • Synthroid Tab 75mcg USP
  • Synthroid Tab 88mcg USP
  • Tirosint
  • Unithroid
  • Eutirox
  • Letrox
  • Levaxin
  • Levothyrox
  • Novothyrox
  • Oroxine
  • Thyrax
Affected Organism Humans and other mammals
Indication For use alone or in combination with antithyroid agents to treat hypothyroidism, goiter, chronic lymphocytic thyroiditis, myxedema coma, and stupor.
Pharmacology Levothyroxine (T4) is a synthetically prepared levo isomer of thyroxine, the major hormone secreted from the thyroid gland. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form triiodothyronine (T3) which exerts a broad spectrum of stimulatory effects on cell metabolism. Thyroid hormone increases the metabolic rate of cells of all tissues in the body. In the fetus and newborn, thyroid hormone is important for the growth and development of all tissues including bones and the brain. In adults, thyroid hormone helps to maintain brain function, food metabolism, and body temperature, among other effects. The symptoms of thyroid deficiency relieved by levothyroxine include slow speech, lack of energy, weight gain, hair loss, dry thick skin and unusual sensitivity to cold.
Mechanism of action Levothyroxine acts like the endogenous thyroid hormone thyroxine (T4, a tetra-iodinated tyrosine derivative). In the liver and kidney, T4 is converted to T3, the active metabolite. In order to increase solubility, the thyroid hormones attach to thyroid hormone binding proteins, thyroxin-binding globulin, and thyroxin-binding prealbumin (transthyretin). Transport and binding to thyroid hormone receptors in the cytoplasm and nucleus then takes place. Thus by acting as a replacement for natural thyroxine, symptoms of thyroxine deficiency are relieved.
Route of administration
  • intramuscular; intravenous
  • intravenous
  • oral
  • topical
AHFS-Code 68:36.04
CAS number 51-48-9
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID: 21059682