Chemicals and Drugs

Pyrithiamine

A thiamine antagonist due to its inhibition of thiamine pyrophosphorylation. It is used to produce thiamine deficiency.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A thiamine antagonist due to its inhibition of thiamine pyrophosphorylation. It is used to produce thiamine deficiency.

Chemical Identity

Chemical Information

Molecular Formula
C14H19BrN4O
Molecular Weight
339.23 g/mol
CAS Registry No.
616-92-2
IUPAC Name
2-[1-[(4-amino-2-methylpyrimidin-5-yl)methyl]-2-methylpyridin-1-ium-3-yl]ethanol bromide
InChIKey
GUWSQVZFXHIGLN-UHFFFAOYSA-M
SMILES
CC1=C(C=CC=[N+]1CC2=CN=C(N=C2N)C)CCO.[Br-]
MeSH Unique ID
D011745
Source
PubChem CID 5460202

MeSH Record

Classification

Related Concepts

Knowledge Graph

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

4 entry terms
  • Heterovitamin B 1
  • Neopyrithiamine
  • 1, Heterovitamin B
  • B 1, Heterovitamin

MeSH Record

Aspects Covered

25 allowable subheadings

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

MeSH Record

Indexing Annotation

a thiamine antag

MeSH Record

History Note

91(77); was see under PYRIDINIUM COMPOUNDS 1977-90

MeSH Record

Previous Indexing

  • Pyridinium Compounds (1974-1976)
  • Pyrimidines (1974-1976)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Pyrithiamine. Medical Subject Headings (MeSH). 2026. Unique ID D011745. http://id.nlm.nih.gov/mesh/2026/D011745
  2. Pyrithiamine. In: Wikidata. https://www.wikidata.org/wiki/Q27098236
  3. Pyrithiamine. In: PubChem Compound. CID 5460202. https://pubchem.ncbi.nlm.nih.gov/compound/5460202