Purpurin CAS: 81-54-9
MF: C14H8O5
MW: 256.21
A xanthine oxidase inhibitor.

Purpurin (CAS 81-54-9)

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Synonym: 1,2,4-Trihydroxy-9,10-anthracenedione
Application: A xanthine oxidase inhibitor
CAS Number: 81-54-9
Molecular Weight: 256.21
Molecular Formula: C14H8O5
* Refer to Certificate of Analysis for lot specific data (including water content).
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Purpurin is a xanthine oxidase inhibitor that reduces the formation of azoxymethane-induced aberrant crypt foci in rat colon studies.


1. Wargovich, M J., et al., 1996. Aberrant crypts as a biomarker for colon cancer: evaluation of potential chemopreventive agents in the rat. Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology. 5(5): 355-60. PMID: 9162301
2. Sheu, S Y., et al., . Inhibition of xanthine oxidase by hydroxylated anthraquinones and related compounds. Anticancer research. 17(5A): 3293-7. PMID: 9413162

Physical State :
Solubility :
Soluble in water (partly), alcohol, ether, DMSO (~0.5 mg/ml), and DMF (~0.5 mg/ml).
Storage :
Store at room temperature
Melting Point :
253-256° C (lit.)
Boiling Point :
~525.1° C at 760 mmHg (Predicted)
Density :
~1.7 g/cm3 (Predicted)
Refractive Index :
n20D 1.77 (Predicted)
IC50 :
Plasmodium falciparum: IC50 = >1 µM; Spermidine-induced autoactivation of plasma hyaluronan-binding protein : IC50 = 6.6 µM; Female germline-specific tumor suppressor gld-1: IC50 = 6.69 µM (caenorhabditis elegans)
pK Values :
pKa: 7.05 (Predicted)
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
PubChem CID :
Merck Index :
14: 7945
MDL Number :
EC Number :
Beilstein Registry :

Download SDS (MSDS)

Certificate of Analysis

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