1592409 USP


United States Pharmacopeia (USP) Reference Standard

Synonym: 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one dihydrate, 3,3′,4′,5,7-Pentahydroxyflavone dihydrate, Quercetin dihydrate

  • CAS Number 6151-25-3

  • Empirical Formula (Hill Notation) C15H10O7 · 2H2O

  • Molecular Weight 338.27

  •  Colour Index Number 75670

  •  Beilstein/REAXYS Number 317313



Related Categories Analytical Standards, Analytical/Chromatography, Pharmacopeia & Metrological Institutes Standards, USP Standards, USP Standards P - R More...
mp   >300 °C (lit.)
Featured Industry   Pharmaceutical (small molecule)


General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Biochem/physiol Actions

Quercetin dihydrate is a flavonoid with anticancer activity. Quercetin is a mitochondrial ATPase and phosphodiesterase inhibitor. It Inhibits PI3-kinase activity and slightly inhibits PIP kinase activity. Quercetin has antiproliferative effects on cancer cell lines, reduces cancer cell growth via type II estrogen receptors, and arrests human leukemic T cells in late G1 phase of the cell cycle.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

USP issued SDS can be found here.

Sales restrictions may apply.

Safety & Documentation

Safety Information

GHS06  GHS06
Signal word 
Hazard statements 
Precautionary statements 
UN 2811 6.1 / PGIII
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


Qualitative Thin Layer Chromatography Analysis of Flavonoids and Quantification of Terpene Lactones in Ginkgo Biloba Extracts and Tablets

Ginkgo is one of the oldest medicinal plants on earth. Originally it comes from China but nowadays it is cultivated all over the world. The plant contains various flavonoids and terpenes, which are r...
Keywords: Derivatizations, Diseases, Mass spectrometry, Sample preparations, Separation, Size-exclusion chromatography, Thin layer chromatography

Peer-Reviewed Papers


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PHR1488 Quercetin, Pharmaceutical Secondary Standard; Certified Reference Material
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