Chemicals and Drugs

Iothalamic Acid

A contrast medium in diagnostic radiology with properties similar to those of diatrizoic acid. It is used primarily as its sodium and meglumine (IOTHALAMATE MEGLUMINE) salts.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A contrast medium in diagnostic radiology with properties similar to those of diatrizoic acid. It is used primarily as its sodium and meglumine (IOTHALAMATE MEGLUMINE) salts.

Chemical Identity

Chemical Information

Molecular Formula
C11H9I3N2O4
Molecular Weight
613.91 g/mol
CAS Registry No.
2276-90-6
IUPAC Name
3-acetamido-2,4,6-triiodo-5-(methylcarbamoyl)benzoic acid
InChIKey
UXIGWFXRQKWHHA-UHFFFAOYSA-N
SMILES
CC(=O)NC1=C(C(=C(C(=C1I)C(=O)O)I)C(=O)NC)I
MeSH Unique ID
D007483
Source
PubChem CID 3737

MeSH Record

Classification

Broader headings

Narrower headings

Related Concepts

Knowledge Graph

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

18 entry terms
  • Iotalamic Acid
  • Methalamic Acid
  • Acid, Iotalamic
  • Acid, Iothalamic
  • Acid, Methalamic
  • Angio-Conray
  • Conray 420
  • Iodothalamate
  • Iothalamate
  • Iothalamic Acid, Calcium (2:1) Salt
  • Iothalamic Acid, Monosilver (1+) Salt
  • Iothalamic Acid, Monosodium Salt
  • Iothalamic Acid, Monosodium Salt, Dimer
  • Lopamidol
  • Sodium Iothalamate
  • Angio Conray
  • AngioConray
  • Iothalamate, Sodium

MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analogs & derivatives, analysis, chemical synthesis, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity.

MeSH Record

History Note

66(63)

MeSH Hierarchy

Tree Numbers

  1. D02w.241w.223.100.400.880.430w
  2. D02w.455w.426w.559w.389.127.375.880.430w

AMA Style

References

  1. National Library of Medicine. Iothalamic Acid. Medical Subject Headings (MeSH). 2026. Unique ID D007483. http://id.nlm.nih.gov/mesh/2026/D007483
  2. Iothalamic Acid. In: Wikipedia. https://en.wikipedia.org/wiki/Iotalamic_acid
  3. Iothalamic Acid. In: Wikidata. https://www.wikidata.org/wiki/Q6064129
  4. Iothalamic Acid. In: PubChem Compound. CID 3737. https://pubchem.ncbi.nlm.nih.gov/compound/3737