QUERCETIN (3,3',4',5,7-PENTAHYDROXYFLAVONE)

QUERCETIN DIHYDRATE

PRODUCT IDENTIFICATION

CAS NO.

117-39-5; 73123-10-1; 74893-81-5 (Base)
6151-25-3 (Dihydrate)

QUERCETIN

EINECS NO.

204-187-1

FORMULA C₁₅H₁₀O₇

MOL WT. 302.24

H.S. CODE

TOXICITY

SYNONYMS Xanthaurine; Meletin; Quercetol; Quertine; Sophoretin;

2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one Dihydrate; Cyanidelonon 1522; 3,3',4',5,7-Pentahydroxyflavone; 3',4',5,7-tetrahydroxyflavon-3-ol Dihydrate; C.I. Natural Red 1; 3,5,7,3',4'-pentahydroxyflavone; C.I. 75670; C.I. Natural yellow 10; C.I. Natural Yellow 10 & 13;

CLASSIFICATION

NATURAL COLORANT / FLAVONES /

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE yellow crystalline powder

MELTING POINT 310 - 317 C

BOILING POINT Sublimes

SPECIFIC GRAVITY

SOLUBILITY IN WATER Practically insoluble

VAPOR DENSITY

8.1

AUTOIGNITION

NFPA RATINGS Health: 2 Flammability: 0 Reactivity: 0

REFRACTIVE INDEX

FLASH POINT 112 C

STABILITY

Stable under ordinary conditions. Moisture sensitive.

GENERAL DESCRIPTION & APPLICATIONS

Quercetin, a common bioflavonol composed of two benzene rings linked with a heterocyclicpyrone ring (aromatic trimeric heterocyclic), is a water-soluble pigment synthesized or naturally occurring in the rind and bark of numerous plants. It, chemically 2-(3,4-dihydroxyphenyl)-3,5,7- trihydroxy- 4H-1-benzopyran-4-one, is a yellow to greenish crystalline powder melting at 302 C. Bioflavonoids are called phytochemicals, Vitamin P, and Vitamin C2. There are about 2000 known bioflavonoids including catechin, citrin, eriodictin, hesperetin, hesperidin, nobiletin, quercetin, rutin, sinensetin, and tangeretin. Vitamin P is not a dietary essential but is known to have the effect on capillary disorders. It increases the strength of the walls of the blood capillaries and regulates their permeability. It may have an contribution to the total antioxidant activity and detoxifiers. It may enhance the action of Vitamin C. It is considered that it lowers down cholesterol levels if it taken with Vitamin C. It is also know to have pharmacological action as an anti-inflammatory ,antihistaminic and antiviral agent.

Members of quercetin

Product	CAS RN
3,3'-Di-O-methylquercetin	4382-17-6
3,4',5-Trihydroxy-3',7-dimethoxyflavone	552-54-5
3',4',7-Tri(hydroxyethyl)quercetin	23077-88-5
3',4',7-Trimethylquercetin	6068-80-0
3,7-Diglucosylquercetin	6892-74-6
3-Methylquercetin	480-19-3
4',7-Dimethoxy-3,3',5-trihydroxyflavone	529-40-8
5,7-Di-O-methylquercetin	13459-07-9
6,8-Dimorpholinomethylquercetin, dihydrochloride	31123-95-2
6-Hydroxyluteolin	18003-33-3
7-O-(beta-Hydroxyethyl)quercetin	51031-80-2
8-Diethylaminomethyl dihydroquercetin hydrochloride	57355-29-0
8-Dimethylaminomethylquercetin hydrochloride	57355-33-6
8-Piperidinemethylquercetin hydrochloride	57355-34-7
8-Piperidylmethyldihydroquercetin hydrochloride	57355-30-3
Benzquercin	13157-90-9
Boehmerin	54716-89-1
Cannabiscitrin	520-14-9
Fisetin	528-48-3
Guajavarin	22255-13-6
Heliosin	72746-38-4
Hyperoside	482-36-0
Isoquercitrin	21637-25-2
Kalanchoquercetin	51888-63-2
Morin	480-16-0
Pentamethoxyquercetin	1247-97-8
Penta-O-ethylquercetin	82547-07-7
Potassium quercetin phosphate	147229-92-3
Quercetin	117-39-5
Quercetin 3-glucosyl(1-3)rhamnosyl(1-6)galactoside	134953-93-8
Quercetin 3-O-alpha-rhamnopyranosyl-(1-2)-beta-galactopyranoside	117611-67-3
Quercetin 3-O-gentobioside	7431-83-6
Quercetin 3-O-glucopyranoside	482-35-9
Quercetin 3-sambubioside	83048-35-5
Quercetin hydrate	849061-97-8
Quercetin 3-methyl ether	1486-70-0
Quercetin 7-O-glucoside	491-50-9
Quercetin dihydrate	6151-25-3
Quercetin pentaacetate	1064-06-8
Quercetin-3-D-xyloside	549-32-6
Quercetin-3-O-galactoside-7-O-glucoside	56782-99-1
Quercetin-3-O-neohesperidose	29322-06-3
Quercetin-3-O-sophoroside	18609-17-1
Quercitrin	522-12-3
Retusine	1245-15-4
Rhamnetin	90-19-7
Robinetin	490-31-3
Rutin	153-18-4
Spiraeoside	20229-56-5
Tamarixetin	603-61-2
Taxifolin	480-18-2
Triphenylsilyl dimethylarsinoate	128988-57-8

SALES SPECIFICATION

APPEARANCE

yellow crystalline powder

ASSAY

96.0% - 102.0%

LOSS ON DRYING

9.0 - 11.0%

SULFATE

0.001% max

CHLORIDE

0.001% max

SULFATED ASH

0.2% max

HEAVY METALS

20ppm max

TRANSPORTATION

PACKING

HAZARD CLASS 6.1 (Packing Group: III)

UN NO. 2811

OTHER INFORMATION

Hazard Symbols: T, Risk Phrases:23/25-40, Safety Phrases: S: 22-36/37/39-45

GENERAL DESCRIPTION OF FLAVONOID

Flavonoid is any member of a class of widely distributed biological natural products containing aromatic heterocyclic skeleton of flavan (2-Phenylbenzopyran) but no nitrogen in plants. Generally, flavonoids are biological pigments providing colours from red to blue in flowers, fruit and leaves. Besides their coloring in plants, flavonoids have important roles in the growth and development of plants; protection against UV-B radiation; forming antifungal barriers; antimicrobial, insecticidal and oestrogenic activities; plant reproduction. Flavonoids also exhibit a wide range of biological properties including anti-microbial, insecticidal and oestrogenic activities. Flavonoids are usually classified into main 6 subgroups as below plus flavans, neoflavonoids, flavonols, aurons, catechins according to the structural patterns.

Flavonols (Hydroxy derivatives of flavone): Fisetin, Galangin, Kaempferide, Kaempferol, Morin, Myricetin, Myricitrin, Quercetin, Quercetrin, Rhamnetin, Robinin, Rutin, Spirenoside

Flavones (skeleton: 2-phenylchromen-4-one): Apigenin, Baicalein, Chrysin, Diosmetin, Diosmin, Flavone, Luteolin, Rpoifolin,Tangeretin, Techtochrysin, Rhamnazin, Nobiletin, Natsudaidain.

Isoflavones (skeleton: 3-phenylchromen-4-one): Daidzin, Genistein, Irilone, Luteone, Prunetin, Pratensein,

Flavonones (derivation by reduction of the 2(3) C=C bond): Eriodictyol, Hesperidin, Hesperetin, Likvirtin, Naringin; Naringenin; Pinocembrin

Flavanols (derivation by reduction of the keto group):(+)-Catechin, (+)-Gallocatechin, (-)-Epicatechin (EC), (-)-Epigallocatechin (EGC), (-)-Epicatechin 3-gallate (ECG), (-)-Epigallocatechin 3-gallate (EGCG), Theaflavin, Theaflavin 3-gallate, Theaflavin 3'-gallate, Theaflavin 3,3' digallate, Thearubigins

Anthocyanidins (aglycones of the glycoside anthocyanins): Apigeninidin, Cyanidin, Delphinidin, Diosmetinidin, Guibourtinidin, Fisetinidin, Luteolinidin, Malvidin, Pelargonidin, Peonidin, Robinetinidin, Tricetinidin, Capensinidin, Petunidin, Europinidin, Aurentinidin, Columnidin, 5-Desoxy-malvidin, 5-Desoxy-peonidin, Hirsutinidin, Rosinidin

PRICE INFORMATION