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    Natural Products
    Quercetin-7-O-beta-D-glucopyranoside
    Information
    CAS No. 491-50-9 Price $363 / 10mg
    Catalog No.CFN99771Purity>=98%
    Molecular Weight464.38Type of CompoundFlavonoids
    FormulaC21H20O12Physical DescriptionYellow powder
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    According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
    Size /Price /Stock 10 mM * 1 mL in DMSO / $236.0 / In-stock
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    Quercetin-7-O-beta-D-glucopyranoside

    Quercetin-7-O-beta-D-glucopyranoside
    Product Name Quercetin-7-O-beta-D-glucopyranoside
    CAS No.: 491-50-9
    Catalog No.: CFN99771
    Molecular Formula: C21H20O12
    Molecular Weight: 464.38 g/mol
    Purity: >=98%
    Type of Compound: Flavonoids
    Physical Desc.: Yellow powder
    Targets: NO | COX | Antifection
    Source: The herbs of Rostellularia procumbens
    Solvent: DMSO, Pyridine, Methanol, Ethanol, etc.
    Price: $363 / 10mg
    Inquire / Order: manager@chemfaces.com
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  • Evid Based Complement Alternat Med.2017, 2017:1583185
  • Bulletin of Health Research2016, 44(4):279-286
  • Cell Metab.2020, S1550-4131(20)30002-4
  • Molecules.2020, 25(9):2081.
  • Biochem Biophys Res Commun.2019, 518(4):732-738
  • J Chromatogr Sci.2020, 58(6):485-493.
  • Nutrients.2018, 10(12)
  • Evid Based Complement Alternat Med.2018, 2018:4259603
  • J Cell Physiol.2020, 10.1002
  • Clin Transl Oncol.2019, 10.1007
  • Related Screening Libraries
    Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
    10 mM * 1 mL in DMSO / Inquiry / In-stock
    Related Libraries
  • Antioxidants Compound Library
  • Antibacterial Compound Library
  • Flavonoids Compound Library
  • NO Inhibitor Library
  • COX Inhibitor Library
  • Antifection Inhibitor Library
  • Biological Activity
    Description: Quercetin-7-O-beta-D-glucopyranoside has antibacterial activity, it shows promising activity against Staphylococcus aureus. Quercetin 7-O-beta-D-glucopyranoside exhibits strong antioxidative, and anti-inflammatory activities, inhibiting expression of inducible nitric oxide synthase and release of nitric oxide by lipopolysaccharide-stimulated RAW 264.7 macrophages in a dose-dependent manner. It inhibits overexpression of cyclooxygenase-2 and granulocyte macrophage-colony-stimulating factor.
    Targets: NO | COX | Antifection
    In vitro:
    Nat Prod Commun. 2010 Aug;5(8):1225-32.
    Phenolic compounds in leaves of Alchornea triplinervia: anatomical localization, mutagenicity, and antibacterial activity.[Pubmed: 20839624]
    Phenolic compounds are produced by secretory idioblasts and hypodermis, and by specialized cells of the epidermis and chlorenchyma of leaves of Alchornea triplinervia.
    METHODS AND RESULTS:
    Phytochemical investigation of these leaves led to the isolation of the known substances quercetin, Quercetin-7-O-beta-D-glucopyranoside, quercetin-3-O-beta-D-glucopyranoside, quercetin-3-O-beta-D-galactopyranoside, quercetin-3-O-alpha-L-arabinopyranoside, amentoflavone, brevifolin carboxylic acid, gallic acid, and methyl gallate from the methanolic extract, and stigmasterol, campesterol, sitosterol, lupeol, friedelan-3-ol, and friedelan-3-one from the chloroform extract.
    CONCLUSIONS:
    In studies of antibacterial activity and mutagenicity, the methanolic extract showed promising activity against Staphylococcus aureus (MIC = 62.5 microg/mL) and was slightly mutagenic in vitro and in vivo at the highest concentrations tested (1335 mg/kg b.w.).
    J Med Food. 2011 Oct;14(10):1127-34.
    Antioxidant and anti-inflammatory activities of quercetin 7-O-β-D-glucopyranoside from the leaves of Brasenia schreberi.[Pubmed: 21859349]
    Brasenia schreberi Gmel. (Cabombaceae) is an aquatic plant that grows in eastern Asia, Australia, Africa, and North and Central America. B. schreberi leaf extracts were obtained by sequential solvent extraction with dichloromethane, methanol, and water. The antioxidant potential of each extract was assessed by using the oxygen radical absorbance capacity (ORAC) assay.
    METHODS AND RESULTS:
    With this method, methanol and water extracts were found to be active with mean ± standard deviation values of 7 ± 2 and 5.1 ± 0.5 μmol Trolox® equivalents (TE)/mg, respectively. Two major phenolic compounds, Quercetin-7-O-beta-D-glucopyranoside and gallic acid, were respectively isolated from the methanolic and water extracts. Both compounds exhibited antioxidant activities, in particular quercetin-7-O-β-D-glucopyranoside (ORAC value, 18 ± 4  μmol TE/μmol). In contrast to its well-known antioxidant homologue quercetin, Quercetin-7-O-beta-D-glucopyranoside does not inhibit growth of human fibroblasts (WS-1) or murine macrophages (RAW 264.7). Some flavonoids have been reported to possess beneficial effects in cardiovascular and chronic inflammatory diseases associated with overproduction of nitric oxide.
    CONCLUSIONS:
    Quercetin-7-O-beta-D-glucopyranoside possesses anti-inflammatory activity, inhibiting expression of inducible nitric oxide synthase and release of nitric oxide by lipopolysaccharide-stimulated RAW 264.7 macrophages in a dose-dependent manner. Quercetin-7-O-beta-D-glucopyranoside also inhibited overexpression of cyclooxygenase-2 and granulocyte macrophage-colony-stimulating factor.
    Arch Pharm Res. 2002 Jun;25(3):313-9.
    Antioxidative flavonoids from leaves of Carthamus tinctorius.[Pubmed: 12135103]
    A total of eight flavonoids (1-8), including a novel quercetin-7-O-(6''-O-acetyl)-beta-D-glucopyranoside (6) and seven known flavonoids, luteolin (1), quercetin (2), luteolin 7-O-beta-D-glucopyranoside (3), luteolin-7-O-(6''-O-acetyl)-beta-D-glucopyranoside (4) Quercetin-7-O-beta-D-glucopyranoside (5), acacetin 7-O-beta-D-glucuronide (7) and apigenin-6-C-beta-D-glucopyrano syl-8-C-beta-D-glucopyranoside (8), have been isolated from the leaves of the safflower (Carthamus tinctorius L.) and identified on the basis of spectroscopic and chemical studies.
    METHODS AND RESULTS:
    The antioxidative activity of these flavonoids was evaluated against 2-deoxyribose degradation and rat liver microsomal lipid peroxidation induced by hydroxyl radicals generated via a Fenton-type reaction. Among these flavonoids, luteolin-acetyl-glucoside (4) and quercetin-acetyl-glucoside (6) showed potent antioxidative activities against 2-deoxyribose degradation and lipid peroxidation in rat liver microsomes. Luteolin (1), quercetin (2), and their corresponding glycosides (3 & 5) also exhibited strong antioxidative activity, while acacetin glucuronide (7) and apigenin-6,8-di-C-glucoside (8) were relatively less active.
    Quercetin-7-O-beta-D-glucopyranoside Description
    Source: The herbs of Rostellularia procumbens
    Solvent: DMSO, Pyridine, Methanol, Ethanol, etc.
    Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

    Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

    Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

    After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 2.1534 mL 10.767 mL 21.5341 mL 43.0682 mL 53.8352 mL
    5 mM 0.4307 mL 2.1534 mL 4.3068 mL 8.6136 mL 10.767 mL
    10 mM 0.2153 mL 1.0767 mL 2.1534 mL 4.3068 mL 5.3835 mL
    50 mM 0.0431 mL 0.2153 mL 0.4307 mL 0.8614 mL 1.0767 mL
    100 mM 0.0215 mL 0.1077 mL 0.2153 mL 0.4307 mL 0.5384 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
    Protocol
    Structure Identification:
    Nat Prod Res. 2014;28(21):1859-63.
    A new flavonoid glycoside from the root bark of Morus alba L.[Pubmed: 25174266]

    METHODS AND RESULTS:
    A new guibourtinidol glycoside, (2R,3S)-guibourtinidol-3-O-α-d-apiofuranosyl-(1 → 6)-O-β-D-glucopyranoside (1), and three known compounds,Quercetin-7-O-beta-D-glucopyranoside(2), syringaresinol-4-O-β-D-glucopyranoside (3) and dehydrodiconiferyl alcohol 4,9'-di-O-β-D-glucopyranoside (4), were isolated from the root bark of Morus alba L. through repeated silica gel, octadecyl silica gel and Sephadex LH-20 column chromatography for the n-BuOH fraction. The chemical structure of the compounds was elucidated based on MS, infrared, 1D and 2D NMR spectroscopic data.
    CONCLUSIONS:
    Compounds 2-4 were also isolated for the first time from the root bark of M. alba L. in this study.
    Food Funct. 2015 Jan;6(1):219-29.
    Quercetin 7-O-glucoside suppresses nitrite-induced formation of dinitrosocatechins and their quinones in catechin/nitrite systems under stomach simulating conditions.[Pubmed: 25375233]
    Foods of plant origin contain flavonoids. In the adzuki bean, (+)-catechin, quercetin 3-O-rutinoside (rutin), and Quercetin-7-O-beta-D-glucopyranoside(Q7G) are the major flavonoids. During mastication of foods prepared from the adzuki bean, the flavonoids are mixed with saliva and swallowed into the stomach.
    METHODS AND RESULTS:
    Here we investigated the interactions between Quercetin-7-O-beta-D-glucopyranoside and (+)-catechin at pH 2, which may proceed in the stomach after the ingestion of foods prepared from the adzuki bean. Quercetin-7-O-beta-D-glucopyranoside reacted with nitrous acid producing nitric oxide (˙NO) and a glucoside of 2-(3,4-dihydroxybenzoyl)-2,4,6-trihydroxy-3(2H)-benzofuranone. (+)-Catechin reacted with nitrous acid producing ˙NO and 6,8-dinitrosocatechin. The production of the dinitrosocatechin was partly suppressed by Q7G, and the suppression resulted in the enhancement of Quercetin-7-O-beta-D-glucopyranoside oxidation. 6,8-Dinitrosocatechin reacted further with nitrous acid generating the o-quinone, and the quinone formation was effectively suppressed by Quercetin-7-O-beta-D-glucopyranoside. In the flavonoids investigated, the suppressive effect decreased in the order Quercetin-7-O-beta-D-glucopyranoside≈quercetin>kaempferol>quercetin 4'-O-glucoside>rutin. Essentially the same results were obtained when (-)-epicatechin was used instead of (+)-catechin.
    CONCLUSIONS:
    The results indicate that nitrous acid-induced formation of 6,8-dinitrosocatechins and the o-quinones can be suppressed by flavonols in the stomach, and that both a hydroxyl group at C3 and ortho-hydroxyl groups in the B-ring are required for efficient suppression.
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