Chemicals and Drugs

Arsenazo III

Metallochrome indicator that changes color when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Metallochrome indicator that changes color when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo.

Chemical Identity

Chemical Information

Molecular Formula
C22H18As2N4O14S2
Molecular Weight
776.4 g/mol
IUPAC Name
3,6-bis[(2-arsonophenyl)hydrazinylidene]-4,5-dioxonaphthalene-2,7-disulfonic acid
InChIKey
TVMZRHVOFZTNET-UHFFFAOYSA-N
SMILES
C1=CC=C(C(=C1)NN=C2C(=CC3=C(C2=O)C(=O)C(=NNC4=CC=CC=C4[As](=O)(O)O)C(=C3)S(=O)(=O)O)S(=O)(=O)O)[As](=O)(O)O
MeSH Unique ID
D001150
Source
PubChem CID 15465

MeSH Record

Classification

Broader headings

Related Concepts

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Drug Class

Pharmacological Action

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

91(80); was see under AZO COMPOUNDS 1980-90

MeSH Record

Previous Indexing

  • Arsenicals (1966-1979)
  • Azo Compounds (1966-1979)
  • Dyes (1966-1979)
  • Indicators and Reagents (1966-1979)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Arsenazo III. Medical Subject Headings (MeSH). 2026. Unique ID D001150. http://id.nlm.nih.gov/mesh/2026/D001150
  2. Arsenazo III. In: Wikidata. https://www.wikidata.org/wiki/Q18651591
  3. Arsenazo III. In: PubChem Compound. CID 15465. https://pubchem.ncbi.nlm.nih.gov/compound/15465