DEXTROTHYROXINE
UNII 4W9K63FION

Substance Identification & Data

This profile provides standardized clinical and technical data for Dextrothyroxine, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 4W9K63FION.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 51-49-0 and the RxNorm Concept ID (RxCUI) 3292. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code

4W9K63FION

CAS Registry Number

51-49-0

RxNorm Concept ID

3292

Detailed Substance Profile

Preferred Name

DEXTROTHYROXINE

Official standardized name for this substance within the FDA UNII nomenclature system.

InChIKey

C15H11I4NO4

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

XUIIKFGFIJCVMT-GFCCVEGCSA-N

Line notation for describing the chemical structure and connectivity of atoms.

NCI Thesaurus

C61719

National Cancer Institute reference terminology for clinical and research data.

PubChem CID

8730

Unique identification number in the NCBI database of chemical substances.

Substance Type

chemical

ISO 11238 classification category (e.g., Chemical, Polymer, Protein).

Ingredient Role

c1(c(cc(cc1I)C[C@H](C(=O)O)N)I)Oc2cc(I)c(c(c2)I)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Dextrothyroxine. Identifiers are organized into official regulatory terms, commercial trade names, and technical systematic synonyms used to ensure accurate identification across clinical pharmaceutical databases, regulatory filings, and electronic health records.