Kaempferol

Also known as: 3,5,7-Trihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one, 3,4',5,7-Tetrahydroxyflavone, Robigenin, Pelargidenolon, Populnetin, Rhamnolutein, Swartziol, Trifolitin, Campherol, Indigoyellow, Nimbecetin, C.I. 75640, Kempferol, Kaempherol, Rhamnolutin, Swartziol

Kaempferol (CAS 520-18-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C15H10O6 and a molecular weight of 286.236 g/mol. Key properties include a melting point of 276°C, a boiling point of 582.1±50.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 226.1±23.6 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H341 — Suspected of causing genetic defects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 520-18-3
Jingsj CID: J-35573-3
Molecular Formula: C₁₅H₁₀O₆
Molecular Weight: 286.236 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	276°C
Boiling Point	582.1±50.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	226.1±23.6 °C
Exact Mass	286.047729
PSA	111.13000
LogP	2.05
Vapor Pressure	0.0±1.7 mmHg at 25°C
Refractive Index	1.785
Additional Property	ethanol: 20 mg/mL

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger

H301 — Toxic if swallowed
H341 — Suspected of causing genetic defects

Activity & Biological Data

Target	Estrogen receptor[1]
Additional Information	[1]. Luo H, et al. Kaempferol nanoparticles achieve strong and selective inhibition of ovarian cancer cell viability. Int J Nanomedicine. 2012; 7: 3951-3959. [2]. Luo H, et al. Kaempferol induces apoptosis in ovarian cancer cells through activating p53 in the intrinsic pathway. Food Chem. 2011 September 15; 128(2): 513-519. [3]. An M, et al. Protective effects of Kaempferol against cardiac sinus node dysfunction via CaMKII deoxidization. Anat Cell Biol. 2015 Dec;48(4):235-43. [4]. Shin D, et al. Dietary Compound Kaempferol Inhibits Airway Thickening Induced by Allergic Reaction in a Bovine Serum Albumin-Induced Model of Asthma. Int J Mol Sci. 2015 Dec 16;16(12):29980-95.

Target

Estrogen receptor[1]

Additional Information

[1]. Luo H, et al. Kaempferol nanoparticles achieve strong and selective inhibition of ovarian cancer cell viability. Int J Nanomedicine. 2012; 7: 3951-3959. [2]. Luo H, et al. Kaempferol induces apoptosis in ovarian cancer cells through activating p53 in the intrinsic pathway. Food Chem. 2011 September 15; 128(2): 513-519. [3]. An M, et al. Protective effects of Kaempferol against cardiac sinus node dysfunction via CaMKII deoxidization. Anat Cell Biol. 2015 Dec;48(4):235-43. [4]. Shin D, et al. Dietary Compound Kaempferol Inhibits Airway Thickening Induced by Allergic Reaction in a Bovine Serum Albumin-Induced Model of Asthma. Int J Mol Sci. 2015 Dec 16;16(12):29980-95.

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 Kaempferol?

The CAS number of Kaempferol is 520-18-3.

What are the molecular formula and molecular weight of Kaempferol?

Kaempferol has molecular formula C15H10O6 and molecular weight 286.236 g/mol.

Is Kaempferol hazardous?

Kaempferol has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H341 — Suspected of causing genetic defects.

What are the upstream and downstream products of Kaempferol?

For Kaempferol, Upstream Products: Astragalin, Aromadendrin, Afzelin; Downstream Products: Isokaempferide, Kaempferide, 2,4,6-Trihydroxybenzaldehyde.

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. "Kaempferol (CAS 520-18-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35573-3 (accessed 2026-11-07).

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