2. Reference Standards
  3. Natural Product Standards
  4. Flavonoids

Flavonoids

Flavonoids are a class of polyphenol secondary metabolites which are abundantly present in plants and diets. Flavonoids have the general structure of a 15-carbon skeleton, which consists of two phenyl rings (A and B) and heterocyclic ring (C). This carbon structure can be abbreviated C6-C3-C6. Depending on the structure of the C-ring, they can be divided into a variety of chemical classes such as flavones, flavonols, Chalcones, Isoflavanones, Anthocyans, Biflavones, and others, etc. Their classes differ in the level of oxidation and pattern of substitution of the pyran ring. Flavonoids have diverse biological activities which include, anti-oxidant activity, free radical scavenging activity, coronary heart disease prevention, hepatoprotective activity, anti-inflammatory, and anticancer activities, while some flavonoids also exhibit potential antiviral activities.

Flavonoids (335):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-18085R
    Quercetin (Standard) 117-39-5
    Quercetin (Standard) is the analytical standard of Quercetin. This product is intended for research and analytical applications. Quercetin, a natural flavonoid, is a stimulator of recombinant SIRT1 and also a PI3K inhibitor with IC50 of 2.4 μM, 3.0 μM and 5.4 μM for PI3K γ, PI3K δ and PI3K β, respectively.
    Quercetin (Standard)
  • HY-13653R
    (-)-Epigallocatechin Gallate (Standard) 989-51-5
    (-)-Epigallocatechin Gallate (Standard) is the analytical standard of (-)-Epigallocatechin Gallate. This product is intended for research and analytical applications. (-)-Epigallocatechin Gallate (EGCG) is a major polyphenol in green tea, which can inhibit cell proliferation and induce cell apoptosis. (-)-Epigallocatechin Gallate inhibits glutamate dehydrogenase 1/2 (GDH1/2, GLUD1/2) activity. (-)-Epigallocatechin Gallate has a potent anticancer, antioxidant and anti-inflammatory properties against various types of cancers such as colorectal cancer, myeloid leukemia, thyroid carcinoma.
    (-)-Epigallocatechin Gallate (Standard)
  • HY-N0162R
    Luteolin (Standard) 491-70-3
    Luteolin (Standard) is the analytical standard of Luteolin. This product is intended for research and analytical applications. Luteolin (Luteoline), a flavanoid compound, is a potent Nrf2 inhibitor. Luteolin has anti-inflammatory, anti-cancer properties, including the induction of apoptosis and cell cycle arrest, and the inhibition of metastasis and angiogenesis, in several cancer cell lines, including human non-small lung cancer cells.
    Luteolin (Standard)
  • HY-14596R
    Genistein (Standard) 446-72-0
    Genistein (Standard) is the analytical standard of Genistein. This product is intended for research and analytical applications. Genistein, a soy isoflavone, is a multiple tyrosine kinases (e.g., EGFR) inhibitor which acts as a chemotherapeutic agent against different types of cancer, mainly by altering apoptosis, the cell cycle, and angiogenesis and inhibiting metastasis.
    Genistein (Standard)
  • HY-N0182R
    Fisetin (Standard) 528-48-3
    Fisetin (Standard) is the analytical standard of Fisetin. This product is intended for research and analytical applications. Fisetin is a natural flavonol found in many fruits and vegetables with various benefits, such as antioxidant, anticancer, neuroprotection effects.
    Fisetin (Standard)
  • HY-N0148R
    Rutin (Standard) 153-18-4
    Rutin (Standard) is the analytical standard of Rutin. This product is intended for research and analytical applications. Rutin (Rutoside) is a flavonoid found in many plants and shows a wide range of biological activities including anti-inflammatory, antidiabetic, antioxidant, neuroprotective, nephroprotective, hepatoprotective and reducing Aβ oligomer activities. Rutin is also a CBR1 inhibitor, which can cross the blood brain barrier. Rutin attenuates vancomycin-induced renal tubular cell apoptosis via suppression of apoptosis, mitochondrial dysfunction, and oxidative stress.
    Rutin (Standard)
  • HY-B1756R
    Rotenone (Standard) 83-79-4
    Rotenone (Standard) is the analytical standard of Rotenone. This product is intended for research and analytical applications. Rotenone is a mitochondrial electron transport chain complex I inhibitor. Rotenone induces apoptosis through enhancing mitochondrial reactive oxygen species production.
    Rotenone (Standard)
  • HY-14590R
    Kaempferol (Standard) 520-18-3
    Kaempferol (Standard) is the analytical standard of Kaempferol. This product is intended for research and analytical applications. Kaempferol (Kempferol), a flavonoid found in many edible plants, inhibits estrogen receptor α expression in breast cancer cells and induces apoptosis in glioblastoma cells and lung cancer cells by activation of MEK-MAPK. Kaempferol can be uesd for the research of breast cancer.
    Kaempferol (Standard)
  • HY-N0019R
    Daidzein (Standard) 486-66-8
    Daidzein (Standard) is the analytical standard of Daidzein. This product is intended for research and analytical applications. Daidzein is a soy isoflavone, which acts as a PPAR activator.
    Daidzein (Standard)
  • HY-N1201R
    Apigenin (Standard) 520-36-5
    Apigenin (Standard) is the analytical standard of Apigenin. This product is intended for research and analytical applications. Apigenin (4',5,7-Trihydroxyflavone) is a competitive CYP2C9 inhibitor with a Ki of 2 μM.
    Apigenin (Standard)
  • HY-N0898R
    Catechin (Standard) 154-23-4
    Catechin (Standard) is the analytical standard of Catechin. This product is intended for research and analytical applications. Catechin ((+)-Catechin) inhibits cyclooxygenase-1 (COX-1) with an IC50 of 1.4 μM.
    Catechin (Standard)
  • HY-N0196R
    Baicalein (Standard) 491-67-8
    Baicalein (Standard) is the analytical standard of Baicalein. This product is intended for research and analytical applications. Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM.
    Baicalein (Standard)
  • HY-N0145R
    Puerarin (Standard) 3681-99-0
    Puerarin (Standard) is the analytical standard of Puerarin. This product is intended for research and analytical applications. Puerarin, an isoflavone extracted from Radix puerariae, is a 5-HT2C receptor antagonist.
    Puerarin (Standard)
  • HY-N0001R
    (-)-Epicatechin (Standard) 490-46-0
    (-)-Epicatechin (Standard) is the analytical standard of (-)-Epicatechin. This product is intended for research and analytical applications. (-)-Epicatechin inhibits cyclooxygenase-1 (COX-1) with an IC50 of 3.2 μM. (-)-Epicatechin inhibits the IL-1β-induced expression of iNOS by blocking the nuclear localization of the p65 subunit of NF-κB.
    (-)-Epicatechin (Standard)
  • HY-N0002R
    (-)-Epicatechin gallate (Standard) 1257-08-5
    (-)-Epicatechin gallate (Standard) is the analytical standard of (-)-Epicatechin gallate. This product is intended for research and analytical applications. (-)-Epicatechin gallate (Epicatechin gallate) inhibits cyclooxygenase-1 (COX-1) with an IC50 of 7.5 μM. (-)-Epicatechin gallate is a GLUT1 and GLUT5 inhibitor. (-)-Epicatechin gallate decreases cell growth of GLUT5-expressing hxt0 yeast cells.
    (-)-Epicatechin gallate (Standard)
  • HY-N0014R
    Icariin (Standard) 489-32-7
    Icariin (Standard) is the analytical standard of Icariin. This product is intended for research and analytical applications. Icariin is a flavonol glycoside. Icariin inhibits PDE5 and PDE4 activities with IC50s of 432 nM and 73.50 μM, respectively. Icariin also is a PPARα activator.
    Icariin (Standard)
  • HY-N0225R
    (-)-Epigallocatechin (Standard) 970-74-1
    (-)-Epigallocatechin (Standard) is the analytical standard of (-)-Epigallocatechin. This product is intended for research and analytical applications. (-)-Epigallocatechin (Epigallocatechin) is the most abundant flavonoid in green tea, can bind to unfolded native polypeptides and prevent conversion to amyloid fibrils.
    (-)-Epigallocatechin (Standard)
  • HY-N0796R
    Procyanidin B2 (Standard) 29106-49-8
    Procyanidin B2 (Standard) is the analytical standard of Procyanidin B2. This product is intended for research and analytical applications. Procyanidin B2 is a natural flavonoid, with anti-cancer, antioxidant activities.
    Procyanidin B2 (Standard)
  • HY-N0153R
    Naringin (Standard) 10236-47-2
    Naringin is a major flavanone glycoside obtained from tomatoes, grapefruits, and many other citrus fruits. Naringin exhibits biological properties such as antioxidant, anti-inflammatory, and antiapoptotic activities. Naringin also inhibits proliferation and invasion and induces apoptosis in human osteosarcoma cells by inhibiting zinc finger E-box binding homeobox 1 (Zeb1).
    Naringin (Standard)
  • HY-N0183R
    Formononetin (Standard) 485-72-3
    Formononetin (Standard) is the analytical standard of Formononetin. This product is intended for research and analytical applications. Formononetin is a potent FGFR2 inhibitor with an IC50 of ~4.31 μM. Formononetin potently inhibits angiogenesis and tumor growth.
    Formononetin (Standard)