• USA Home
  • P0027 - Pyrvinium pamoate salt hydrate

P0027 Sigma

Pyrvinium pamoate salt hydrate

≥98% (HPLC)

Synonym: 6-(Dimethylamino)-2-[2-(2,5-dimethyl-1-phenyl-1H-pyrrol-3-yl)ethenyl]-1-methyl-4,4′-methylenebis[3-hydroxy-2-naphthalenecarboxylate] (2:1)-quinolinium, Alnoxin, Altolat, NSC 223622, PP, Pamovin, Vermitibier, Vipyrvinium embonate

  • CAS Number 3546-41-6 (anhydrous)

  • Empirical Formula (Hill Notation) C26H28N3 · 0.5 C23H14O6 · xH2O

  • Molecular Weight 575.70 (anhydrous basis)

  •  PubChem Substance ID 329819982



Related Categories Androgen, Approved Therapeutics/Drug Candidates, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology,
assay   ≥98% (HPLC)
form   powder
color   red
solubility   DMSO: >10 mg/mL
originator   Pfizer
storage temp.   room temp



10, 50 mg in glass bottle

Biochem/physiol Actions

Pyrvinium pamoate is a potent androgen receptor inhibitor. Androgen receptors (ARs) are nuclear hormone receptors/transcription factors that reside in the cytoplasm and activated by testosterone and dihydrotestosterone. AR inhibitors have potential therapeutic benefit in prostate cancer; competitive inhibitors and chemical castration methods have been discovered, but both therapies have undesirable side effects and/or resistance potential. A screen for non-competitive inhibitors was performed, resulting in the discovery of pyrvinium as an AR inhibitor. In comparison to competitive inhibitors, this compound does not bind to the ligand-binding domain of AR or block DNA occupancy by AR, but it inhibits AR-dependent gene expression via a distinct signaling mechanism. It is more potent than classical competitive AR antagonists and exhibits synergy with other AR inhibitors.

Features and Benefits

This compound is featured on the Nuclear Receptors (Steroids) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

This compound was developed by Pfizer. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Safety & Documentation

Safety Information

Signal word 
Precautionary statements 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Discover your Target

Milli-Q® Water Purification Solutions
Protocols & Articles


Nuclear Receptors (Steroids)

Intracellular receptors (IRs) are a class of ligand-dependent transcription factors that include receptors for both steroid and non-steroid hormones. Upon binding their cognate hormone, these recepto...
Keywords: Anti-inflammatory agents, Apoptosis, Atomic absorption spectroscopy, Cancer, Cardiovascular, Cell proliferation, Diseases, Diuretics, Gene expression, Hormones, Infrared spectroscopy, Ligands, Metabolism, Metabolites, Transcription, Transduction

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?