General Information
Drug ID
DR00107
Drug Name
Levothyroxine
Synonyms
(-)-Thyroxine; (125I)T4; (2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid; 2-amino-3-[4-(4-hydroxy-3,5-diiodo-phenoxy)-3,5-diiodo-phenyl]-propanoic acid; 3,3',5,5"-Tetraiodo-L-thyronine; 3,3',5,5''-Tetraiodo-L-thyronine; 3,3',5,5'-Tetraiodo-L-thyronine; 3,5,3',5'-Tetraiodo-L-thyronine; 3,5,3',5'-Tetraiodothyronine; 3,5,3'5'-Tetraiodo-L-thyronine; 3-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)alanine; 3-[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]-L-alanine; 4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodo-L-phenylalanine; Beta-((3,5-Diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl)alanine;O-(4-Hydroxy-3,5-diidophenyl)-3,5-diiodo-L-tyrosine; DL-Thyroxin; Eltroxin; Eltroxin (TN); Euthyrox; Euthyrox (TN); Eutirox (TN); Forthyron; Forthyron (TN); L-3,5,3',5'-Tetraiodothyronine; L-T4; L-Thryoxin; L-Thyroxin; L-thyroxine; L-thyroxine (TN); LT00440967; Laevothyroxinum; Laevothyroxinum (acid); Laevoxin; Levaxin (TN); Levo-T; Levolet; Levothroid; Levothroid (*Sodiumsalt*); Levothyrox; Levothyroxin; Levothyroxine (BAN); Levothyroxine Sodium (L-thyroxine); Levothyroxine sodium; Levothyroxinum (acid); Levoxyl; Levoxyl (TN); O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodotyrosine; O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine; Oroxine; Synthroid; Synthroid (*Sodium salt*); Synthroid (TN); Synthroid sodium; T-3850; T4 (Hormone); T4 levothyroxine; THX; Tetraiodothyronine; Thyratabs; Thyrax; Thyrax (TN); Thyreoideum; Thyrox (TN); Thyroxevan; Thyroxin; Thyroxinal; Thyroxine (VAN); Thyroxine (l); Thyroxine [BAN]; Thyroxine iodine; Thyroxine, L-(8CI)
Drug Type
Small molecular drug
Indication Hypothyroidism [ICD11: 5A00.2] Approved [1]
Therapeutic Class
Antithyroid Agents
Structure
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3D MOL 2D MOL
Formula
C15H11I4NO4
Canonical SMILES
C1=C(C=C(C(=C1I)OC2=CC(=C(C(=C2)I)O)I)I)CC(C(=O)O)N
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/i16-2
InChIKey
XUIIKFGFIJCVMT-SUXPHOQTSA-N
CAS Number
CAS 51-48-9
Pharmaceutical Properties Molecular Weight 774.874 Topological Polar Surface Area 92.8
Heavy Atom Count 24 Rotatable Bond Count 5
Hydrogen Bond Donor Count 3 Hydrogen Bond Acceptor Count 5
PubChem CID
644282
PubChem SID
109827971 , 178101345 , 43765980 , 57408252 , 80197225 , 842018
ChEBI ID
ChEBI:18332
TTD Drug ID
D06RGG
DT(s) Transporting This Drug OATP1A2 Transporter Info Organic anion transporting polypeptide 1A2 Substrate [2]
OATP1B1 Transporter Info Organic anion transporting polypeptide 1B1 Substrate [3]
OATP1C1 Transporter Info Organic anion transporting polypeptide 1C1 Substrate [4]
Drug-Transporter Activity Data
Drug-Transporter Activity Data OATP1A2 Transporter Info Km = 8 microM Oocytes-OATP1A2 [2]
OATP1B1 Transporter Info Km = 3 microM Oocytes-OATP1B1 [3]
OATP1C1 Transporter Info Km = 0.0904 microM Chinese hamster ovary (CHO) cells-OATP1C1 [4]
References
1 Levothyroxine was approved by FDA. The official website of the U.S. Food and Drug Administration. (2019)
2 Identification of thyroid hormone transporters in humans: different molecules are involved in a tissue-specific manner. Endocrinology. 2001 May;142(5):2005-12.
3 Identification of a novel gene family encoding human liver-specific organic anion transporter LST-1. J Biol Chem. 1999 Jun 11;274(24):17159-63.
4 Identification of a novel human organic anion transporting polypeptide as a high affinity thyroxine transporter. Mol Endocrinol. 2002 Oct;16(10):2283-96.

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