PZ0183 Sigma-Aldrich


≥98% (HPLC)

Synonym: 2-(3-Fluoro-4-hydroxyphenyl)-7-vinyl-1,3-benzoxazol-5-ol, Prinaberel, WAY-202041

  • CAS Number 524684-52-4

  • Empirical Formula (Hill Notation) C15H10FNO3

  • Molecular Weight 271.24

  •  MDL number MFCD09954141

  •  PubChem Substance ID 329823757

  •  NACRES NA.77



Related Categories Approved Therapeutics/Drug Candidates, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology, Cell Signaling and Neuroscience,
Quality Level   100
assay   ≥98% (HPLC)
form   powder
mfr. no.   Pfizer®
color   white to tan
solubility   DMSO: ≥25 mg/mL
originator   Pfizer
storage temp.   room temp
SMILES string   OC(C=C1)=C(F)C=C1C2=NC3=CC(O)=CC(C=C)=C3O2
InChI   1S/C15H10FNO3/c1-2-8-5-10(18)7-12-14(8)20-15(17-12)9-3-4-13(19)11(16)6-9/h2-7,18-19H,1H2
Gene Information   human ... ESR2(2100)



5, 25 mg in glass bottle

Biochem/physiol Actions

ERB-041 is a potent, selective estrogen ERβ receptor agonist (IC50 ERβ: 5.4 nM; > 200-fold selective over ERα). ERβ plays a minor role in mediating estrogen action in the uterus, the hypothalamus/pituitary, the skeleton, and other classic estrogen target tissues. However, a clear role for ERβ has been established in the ovary, cardiovascular system, and brain as well as in animal models of inflammation including arthritis, endometriosis, inflammatory bowel disease, and sepsis. There is increasing interest in finding ERβ agonists for potential use in a variety of clinical applications without triggering classic estrogenic side effects.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®Pfizer), a collection of 90 Pfizer-developed drugs and research tools. Click here to learn more.

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.

Other Notes

This compound was developed by Pfizer for Cytokines & Growth Factors research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit

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

Legal Information

Sold for research purposes under agreement from Pfizer Inc.

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Pfizer is a registered trademark of Pfizer, Inc.

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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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

Pfizer Compounds for Cytokines and Growth Factors

From our library of Articles, Sigma-Aldrich presents Pfizer Compounds for Cytokines and Growth Factors

Peer-Reviewed Papers


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