槲皮素

Description

Quercetin · CAS 117-39-5 · C15H10O7. UNII 9IKM0I5T1E. Melting Point: 601 to 603 °F (NTP, 1992); Melting Point: 316.5; Melting Point: 316.5 °C.

Identification

CAS Registry Number	117-39-5
PubChem CID	5280343
Molecular formula	C15H10O7
IUPAC name	2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
UNII (FDA)	9IKM0I5T1E

Computed Descriptors

Molecular Weight	302.23
XLogP3	1.5
Hydrogen Bond Donor Count	5
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	1
Exact Mass	302.04265265
Monoisotopic Mass	302.04265265
Topological Polar Surface Area	127
Heavy Atom Count	22
Formal Charge	0

Physical & Chemical Properties

Melting Point	601 to 603 °F (NTP, 1992)
Melting Point	316.5
Melting Point	316.5 °C
Melting Point	316 - 318 °C
Solubility	60
Solubility	In water, 60 mg/L at 16 °C
Solubility	0.06 mg/mL at 16 °C
LogP	2.13

Physical description & handling notes

• Quercetin appears as yellow needles or yellow powder. Converts to anhydrous form at 203-207 °F. Alcoholic solutions taste very bitter. (NTP, 1992)
• Solid
• Yellow needles (dilute alcohol, +2 water)
• Sublimes (NTP, 1992)
• Sublimes
• less than 1 mg/mL at 70 °F (NTP, 1992)

Regulatory Status

Regulatory & Food Contact	COLOUR: Food Additives Ingredient in beverages and beverage bases, grain products and pastas, processed fruits and fruit juices, and Scientific procedures FDA has no questions; some uses may require a color additive listing Quercegen Pharma LLC CI NATURAL YELLOW 10
GHS notification summary	1.3% (3 / 224)

GHS Hazard Classification

GHS notification summary	1.3% (3 / 224)
Reported hazard statements	H301 (97.3%)

Documented Uses

• Quercetin has been used in ... dyes and as a veterinary drug.
• Medicine, reported formation of epoxy resins on mixing with epichlorohydrin
• Free-radical inhibiting antioxidant useful in cosmetics intended to protect the product from oxidative damage from UV radiation or singlet oxygen formation ... Use levels are normally about 0.1% and rarely exceed 0.2%.
• For more Uses (Complete) data for QUERCETIN (8 total), please visit the HSDB record page.
• Food Additives -> COLOUR -> JECFA Functional Classes
• Isolation from Rhododendron cinnabarinum Hook, Ericaceae

Synonyms

quercetin; 117-39-5; Sophoretin; Meletin; Xanthaurine; Quercetol; Quercetine; Quertine; 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one; Quercitin; 3,3',4',5,7-Pentahydroxyflavone; Quertin; 3,5,7,3',4'-Pentahydroxyflavone; Cyanidelonon 1522; Flavin meletin; T-Gelb bzw. grun 1

Frequently Asked Questions

What are the CAS number and molecular formula of Quercetin?

CAS 117-39-5; molecular formula C15H10O7; molecular weight — g/mol.

What other names is Quercetin known by?

quercetin, 117-39-5, Sophoretin, Meletin, Xanthaurine, Quercetol.

What is the regulatory status of Quercetin?

Documented regulatory listings: COLOUR: Food Additives; Ingredient in beverages and beverage bases, grain products and pastas, processed fruits and fruit juices, and ; Scientific procedures.

Is Quercetin classified as hazardous?

1.3% of GHS notifications report no hazard classification (3 of 224).

What are the key physical properties of Quercetin?

Melting Point: 601 to 603 °F (NTP, 1992); Melting Point: 316.5; Melting Point: 316.5 °C; Melting Point: 316 - 318 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.