Quercetin

Also known as: 3,3',4',5,7-Pentahydroxyflavone, 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one, Sophoretin, Quercetol, Quercitin, Quertine, Meletin, Xanthaurine, C.I. 75670, EINECS 204-187-1

Quercetin (CAS 117-39-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H10O7 and a molecular weight of 302.236 g/mol. Key properties include a melting point of 314-317°C, a boiling point of 642.4±55.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 248.1±25.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 117-39-5
Jingsj CID: J-1001937-1
Molecular Formula: C₁₅H₁₀O₇
Molecular Weight: 302.236 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	314-317°C
Boiling Point	642.4±55.0 °C at 760 mmHg
Density	1.8±0.1 g/cm3
Flash Point	248.1±25.0 °C
Exact Mass	302.042664
PSA	131.36000
LogP	2.08
Vapor Pressure	0.0±2.0 mmHg at 25°C
Refractive Index	1.823
Additional Property	<0.1 g/100 mL at 21 ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

H301 — Toxic if swallowed

Activity & Biological Data

Target	PI3Kβ:5.4 μM (IC50) PI3Kδ:2.4 μM (IC50) PI3Kγ:3 μM (IC50) Autophagy Mitophagy
Additional Information	[1]. Navarro-Nú?ez L, et al. Effect of quercetin on platelet spreading on collagen and fibrinogen and on multiple platelet kinases. Fitoterapia. 2010 Mar;81(2):75-80. [2]. Yu XB, et al. Inhibitory effects of protein kinase C inhibitors on tumor necrosis factor induced bovine pulmonary artery endothelial cell injuries. Yao Xue Xue Bao. 1996;31(3):176-81. [3]. Yang F, et al. Combination of Quercetin and 2-Methoxyestradiol Enhances Inhibition of Human Prostate Cancer LNCaP and PC-3 Cells Xenograft Tumor Growth. PLoS One. 2015 May 26;10(5):e0128277.

Target

PI3Kβ:5.4 μM (IC50) PI3Kδ:2.4 μM (IC50) PI3Kγ:3 μM (IC50) Autophagy Mitophagy

Additional Information

[1]. Navarro-Nú?ez L, et al. Effect of quercetin on platelet spreading on collagen and fibrinogen and on multiple platelet kinases. Fitoterapia. 2010 Mar;81(2):75-80. [2]. Yu XB, et al. Inhibitory effects of protein kinase C inhibitors on tumor necrosis factor induced bovine pulmonary artery endothelial cell injuries. Yao Xue Xue Bao. 1996;31(3):176-81. [3]. Yang F, et al. Combination of Quercetin and 2-Methoxyestradiol Enhances Inhibition of Human Prostate Cancer LNCaP and PC-3 Cells Xenograft Tumor Growth. PLoS One. 2015 May 26;10(5):e0128277.

Customs & Trade Information

HS Code	2914501900
Summary	2914501900 other ketone-phenols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Quercetin?

The CAS number of Quercetin is 117-39-5.

What are the molecular formula and molecular weight of Quercetin?

Quercetin has molecular formula C15H10O7 and molecular weight 302.236 g/mol.

Is Quercetin hazardous?

Quercetin has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Quercetin?

For Quercetin, Upstream Products: Hyperoside, Isoquercitrin, Rutin; Downstream Products: Gossypetin, Quercetin 7-O-beta-D-glucopyranoside, protocatechuic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Quercetin (CAS 117-39-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1001937-1 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.