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Flavanols
You are here: Product Lines > Oxidative Stress > Antioxidants, Flavonoids & Free Radical Scavengers > Flavanols
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ALX-385-017 Revised 01-Apr-08
(+)-Catechin . monohydrate
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SYNONYMS (+)-3,3',4',5,7-Flavanpentol
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-385-017-G001   1 g 20.00 USD Add To Cart
Product Specification
FORMULA: C15H14O6 . H2O
MW: 290.3 . 18.0
CAS NUMBER: 88191-48-4, 225937-10-0
MERCK INDEX: 14: 1902
PURITY: ≥98% (TLC)
APPEARANCE: Off-white to yellow powder.
SOLUBILITY: Soluble in 100% ethanol (50mg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HAZARD: IRRITANT.

Product Description
Antioxidant flavonoid. Free radical scavenger. Has chemopreventive and antitumor properties.
Product Specific Literature References
Adjuvant chemoprevention of experimental cancer: catechin and dietary turmeric in forestomach and oral cancer models: M.A. Azuine & S.V. Bhide; J. Ethnopharmacol. 44, 211 (1994) Abstract
Chemoprevention of mammary tumor virus-induced and chemical carcinogen-induced rodent mammary tumors by natural plant products: S.V. Bhide, et al.; Breast Cancer Res. Treat. 30, 233 (1994) Abstract
Structure-antioxidant activity relationships of flavonoids and phenolic acids: C.A. Rice-Evans, et al.; Free Radical Biol. & Med. 20, 933 (1996), (Review) Abstract
Flavonoids as anticancer agents: structure-activity relationship study: M. Lopez-Lazaro; Curr. Med. Chem. Anticancer Agents 2, 691 (2002), (Review) Abstract
In vitro biological properties of flavonoid conjugates found in vivo: G. Williamson, et al.; Free Radic. Res. 39, 457 (2005), (Review) Abstract
(+)-Catechin prevents ultraviolet B-induced human keratinocyte death via inhibition of JNK phosphorylation: W.B. Wu, et al.; Life Sci. 79, 801 (2006) Abstract
Antispasmodic, bronchodilator and vasodilator activities of (+)-catechin, a naturally occurring flavonoid: M.N. Ghayur, et al.; Arch. Pharm. Res. 30, 970 (2007) Abstract
Further Categories Containing This Product:
Free Radical Scavengers • Active Substances from Fruit and Vegetables • Natural Products - Chemopreventive Agents • Flavanols • Natural Products - Antitumor Reagents
 
 
ALX-385-002 Revised 11-Nov-08
(±)-Catechin
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SYNONYMS (±)-3,3',4',5,7-Flavanpentol
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-385-002-G001   1 g 80.00 USD Add To Cart
Product Specification
FORMULA: C15H14O6
MW: 290.3 (anhydrous basis)
CAS NUMBER: 7295-85-4
MERCK INDEX: 14: 1902
PURITY: ≥98% (HPLC)
APPEARANCE: White to yellow powder.
SOLUBILITY: Soluble in methanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from light. Keep under inert gas.
HAZARD: IRRITANT.
IDENTITY: Identity determined by IR.

Product Description
Antioxidant flavonoid. Free radical scavenger. Has chemopreventive and antitumor properties.
Product Specific Literature References
Adjuvant chemoprevention of experimental cancer: catechin and dietary turmeric in forestomach and oral cancer models: M.A. Azuine & S.V. Bhide; J. Ethnopharmacol. 44, 211 (1994) Abstract
Chemoprevention of mammary tumor virus-induced and chemical carcinogen-induced rodent mammary tumors by natural plant products: S.V. Bhide, et al.; Breast Cancer Res. Treat. 30, 233 (1994) Abstract
Structure-antioxidant activity relationships of flavonoids and phenolic acids: C.A. Rice-Evans, et al.; Free Radical Biol. & Med. 20, 933 (1996), (Review) Abstract
Flavonoids as anticancer agents: structure-activity relationship study: M. Lopez-Lazaro; Curr. Med. Chem. Anticancer Agents 2, 691 (2002), (Review) Abstract
In vitro biological properties of flavonoid conjugates found in vivo: G. Williamson, et al.; Free Radic. Res. 39, 457 (2005), (Review) Abstract
(+)-Catechin prevents ultraviolet B-induced human keratinocyte death via inhibition of JNK phosphorylation: W.B. Wu, et al.; Life Sci. 79, 801 (2006) Abstract
Antispasmodic, bronchodilator and vasodilator activities of (+)-catechin, a naturally occurring flavonoid: M.N. Ghayur, et al.; Arch. Pharm. Res. 30, 970 (2007) Abstract
Further Categories Containing This Product:
Active Substances from Fruit and Vegetables • Free Radical Scavengers • Natural Products - Chemopreventive Agents • Flavanols • Natural Products - Antitumor Reagents
 
 
ALX-350-365 Revised 07-Oct-08
Cinnamtannin B-1
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SYNONYMS Epicatechin-(4β→8,2β→O→7)-epicatechin-(4α→8)-epicatechin
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Apoptosis Inducers & Inhibitors
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ALX-350-365-M005   5 mg 230.00 USD Add To Cart
Product Specification
FORMULA: C45H36O18
MW: 864.7
CAS NUMBER: 88082-60-4
SOURCE/HOST: Isolated from Laurus nobilis L.
PURITY: ≥90% (1H-NMR)
APPEARANCE: Brown solid.
SOLUBILITY: Soluble in 100% ethanol, methanol or in a mixture of DMSO and water.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light. Keep under inert gas.

Product Description
A-type proanthocyanidin contained in several plant species such as Laurus nobilis L., Vaccinium vitis-idaea, Parameria laevigata, Cinnamomum zeylanicum and Lindera umbellata. Potent antioxidant. Protective agent against oxidative stress and apoptosis in human platelets.
Product Specific Literature References
Pharmacological Studies on Linderae umbellatae Ramus, IV*. Effects of condensed tannin related compounds on peptic activity and stress-induced gastric lesions in mice: N. Ezaki, et al.; Planta Med. 51, 34 (1985) Abstract
Antitumor agents, 129. Tannins and related compounds as selective cytotoxic agents: Y. Kashiwada, et al.; J. Nat. Prod. 55, 1033 (1992) Abstract
Antioxidant activity of tannin components from Vaccinium vitis-idaea L: K.Y. Ho, et al.; J. Pharm. Pharmacol. 51, 1075 (1999) Abstract
Studies on the constituents of bark of Parameria laevigata Moldenke: K. Kamiya, et al.; Chem. Pharm. Bull. 49, 551 (2001) Abstract; Full Text
Cinnamtannin B1 activity on adipocytes formation: M. Taher, et al.; Med. J. Malaysia 59, 97 (2004) Abstract
Phenolic constituents in the fruits of Cinnamomum zeylanicum and their antioxidant activity: G.K. Jayaprakasha, et al.; J. Agric. Food Chem. 54, 1672 (2006) Abstract
Characterization of the intracellular mechanisms involved in the antiaggregant properties of cinnamtannin B-1 from bay wood in human platelets: N. Ben Amor, et al.; J. Med. Chem. 50, 3937 (2007) Abstract
Cinnamtannin B-1 from bay wood exhibits antiapoptotic effects in human platelets: A. Bouaziz, et al.; Apoptosis 12, 489 (2007) Abstract
Cinnamtannin B-1 from bay wood reduces abnormal intracellular Ca2+ homeostasis and platelet hyperaggregability in type 2 diabetes mellitus patients: A. Bouaziz, et al.; Arch. Biochem. Biophys. 457, 235 (2007) Abstract
Further Categories Containing This Product:
Active Substances from Fruit and Vegetables • Flavanols • Natural Products - Antioxidants
 
 
ALX-270-263 Revised 03-Apr-08
(-)-Epigallocatechin gallate
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SYNONYMS EGCG
(2R,3R)-2-(3,4,5-Trihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol 3-(3,4,5-trihydroxybenzoate)
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-263-M010   10 mg 20.00 USD Add To Cart
ALX-270-263-M050   50 mg 60.00 USD Add To Cart
Product Specification
FORMULA: C22H18O11
MW: 458.4
CAS NUMBER: 989-51-5
MERCK INDEX: 14: 3526
SOURCE/HOST: Isolated from green tea.
PURITY: ≥98% (HPLC)
APPEARANCE: Off-white to yellow powder.
SOLUBILITY: Soluble in 100% ethanol, dimethyl formamide or DMSO; slightly soluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
USE/STABILITY: Stock solutions in DMSO are stable for up to 3 months when stored at -20°C.
HANDLING: After reconstitution, prepare aliquots and store at -20°C. Keep under inert gas. Protect from light.

Product Description
Antitumor reagent. Antioxidant. Protects cells from lipid peroxidation and DNA damage induced by reactive free radicals. Inhibits inducible nitric oxide synthase (iNOS; NOS II). Chemopreventive anticancer agent. Induces apoptosis in human cancer cell lines. Inhibits MAP kinase mediated signalling pathways. Inhibits angiogenesis. Inhibits telomerase and DNA methyltransferase. Anti-inflammatory agent.
Product Specific Literature References
Inhibitory effect of topical application of a green tea polyphenol fraction on tumor initiation and promotion in mouse skin: M.T. Huang, et al.; Carcinogenesis 13, 947 (1992) Abstract
Inhibition of 12-O-tetradecanoylphorbol-13-acetate and other skin tumor-promoter-caused induction of epidermal interleukin-1 alpha mRNA and protein expression in SENCAR mice by green tea polyphenols: S.K. Katiyar, et al.; J. Invest. Dermatol. 105, 394 (1995) Abstract
Growth inhibition and regression of human prostate and breast tumors in athymic mice by tea epigallocatechin gallate: S. Liao, et al.; Cancer Lett. 96, 239 (1995) Abstract
Inhibition of N-methyl-N'-nitro-N-nitrosoguanidine-induced carcinogenesis by (-)-epigallocatechin gallate in the rat glandular stomach: T. Yamane, et al.; Cancer Res. 55, 2081 (1995) Abstract
(-)-Epigallocatechin gallate, a polyphenolic tea antioxidant, inhibits peroxynitrite-mediated formation of 8-oxodeoxyguanosine and 3-nitrotyrosine: E.S. Fiala, et al.; Experientia 52, 922 (1996) Abstract
Green tea constituent epigallocatechin-3-gallate and induction of apoptosis and cell cycle arrest in human carcinoma cells: N. Ahmad, et al.; J. Natl. Cancer Inst. 89, 1881 (1997) Abstract
Inhibition of inducible nitric oxide synthase gene expression and enzyme activity by epigallocatechin gallate, a natural product from green tea: M.M. Chan, et al.; Biochem. Pharmacol. 54, 1281 (1997) Abstract
(-)-Epigallocatechin-3-gallate blocks the induction of nitric oxide synthase by down-regulating lipopolysaccharide-induced activity of transcription factor nuclear factor-kappaB: Y.L. Lin & J.K. Lin; Mol. Pharmacol. 52, 465 (1997) Abstract
Telomerase inhibition, telomere shortening, and senescence of cancer cells by tea catechins: I. Naasani, et al.; BBRC 249, 391 (1998) Abstract
Epigallocatechin suppression of proliferation of vascular smooth muscle cells: correlation with c-jun and JNK: L.H. Lu, et al.; Br. J. Pharmacol. 124, 1227 (1998) Abstract
ESR study on the structure-antioxidant activity relationship of tea catechins and their epimers: Q. Guo, et al.; Biochim. Biophys. Acta 1427, 13 (1999) Abstract
Pharmacokinetics of the green tea derivative, EGCG, by the topical route of administration in mouse and human skin: K. Dvorakova, et al.; Cancer Chemother. Pharmacol. 43, 331 (1999) Abstract
Polyphenolic antioxidant (-)-epigallocatechin-3-gallate from green tea reduces UVB-induced inflammatory responses and infiltration of leukocytes in human skin: S.K. Katiyar, et al.; Photochem. Photobiol. 69, 148 (1999) Abstract
Antioxidant chemistry of green tea catechins. Identification of products of the reaction of (-)-epigallocatechin gallate with peroxyl radicals: S. Valcic, et al.; Chem. Res. Toxicol. 12, 382 (1999) Abstract
Antimutagenic and anticarcinogenic activity of tea polyphenols: Y. Kuroda & Y. Hara; Mutat. Res. 436, 69 (1999) Abstract
Inhibitory effect of green and black tea on tumor growth: A.H. Conney, et al.; Proc. Soc. Exp. Biol. Med. 220, 229 (1999) Abstract
Green tea epigallocatechin gallate: a natural inhibitor of fatty-acid synthase: X. Wang & W. Tian; BBRC 288, 1200 (2001) Abstract
Epigallocatechin gallate, a constituent of green tea, represses hepatic glucose production: M.E. Waltner-Law, et al.; J. Biol. Chem. 277, 34933 (2002) Abstract; Full Text
The specificities of protein kinase inhibitors: an update:: J. Bain, et al.; Biochem. J. 371, 199 (2003) Abstract; Full Text
Selective inhibition of ADAMTS-1, -4 and -5 by catechin gallate esters: M.N. Vankemmelbeke, et al.; Eur. J. Biochem. 270, 2394 (2003) Abstract
Epigallocatechin-3-gallate, constituent of green tea, suppresses the LPS-induced phenotypic and functional maturation of murine dendritic cells through inhibition of mitogen-activated protein kinases and NF-kappaB: S.C. Ahn, et al.; BBRC 313, 148 (2004) Abstract
Epigallocatechin-3-gallate inhibits epidermal growth factor receptor signaling pathway. Evidence for direct inhibition of ERK1/2 and AKT kinases: J.F. Sah, et al.; J. Biol. Chem. 279, 12755 (2004) Abstract
Inhibition of c-Jun NH2-terminal kinase activity improves ischemia/reperfusion injury in rat lungs: M. Ishii, et al.; J. Immunol. 172, 2569 (2004) Abstract
A constituent of green tea, epigallocatechin-3-gallate, activates endothelial nitric oxide synthase by a phosphatidylinositol-3-OH-kinase-, cAMP-dependent protein kinase-, and Akt-dependent pathway and leads to endothelial-dependent vasorelaxation: M. Lorenz, et al.; J. Biol. Chem. 279, 6190 (2004) Abstract; Full Text
Green tea polyphenols prevent toxin-induced hepatotoxicity in mice by down-regulating inducible nitric oxide-derived prooxidants: J.H. Chen, et al.; Am. J. Clin. Nutr. 80, 742 (2004) Abstract; Full Text
Neuroprotective effects of (-)-epigallocatechin gallate following hypoxia-ischemia-induced brain damage: novel mechanisms of action: B.A. Sutherland, et al.; FASEB J. 19, 258 (2005) Abstract; Full Text
Tea flavanols inhibit angiotensin-converting enzyme activity and increase nitric oxide production in human endothelial cells: I.A. Persson, et al.; J. Pharm. Pharmacol. 58, 1139 (2006) Abstract
General Literature References
Anticarcinogenic effects of (-)-epigallocatechin gallate: H. Fujiki, et al.; Prev. Med. 21, 503 (1992), (Review) Abstract
Absorption, metabolism and antioxidative effects of tea catechin in humans: T. Miyazawa; Biofactors 13, 55 (2000), (Review) Abstract
Inhibition of tumour invasion and angiogenesis by epigallocatechin gallate (EGCG), a major component of green tea: Y.D. Jung and L.M. Ellis; Int. J. Exp. Pathol. 82, 309 (2001), (Review) Abstract
Anti-invasive effects of green tea polyphenol epigallocatechin-3-gallate (EGCG), a natural inhibitor of metallo and serine proteases: R. Benelli, et al.; Biol. Chem. 383, 101 (2002), (Review) Abstract
Further Categories Containing This Product:
Flavanols • NOS Inhibitors (NOS Induction & Enzyme Activity) • MAPK Pathway Inhibitors • Akt [PKB] / Related Products • EGFR Kinase Inhibitors • PKC Inhibitors • Telomerase / Related Products • Natural Products - Chemopreventive Agents • Fatty Acid Synthase [FAS] / Related Products • JNK [SAPK1] / Related Products • Natural Products - Protein Kinase Inhibitors • Active Substances from Fruit and Vegetables • Antitumor Agents (Enzyme Inhibitors) • Antitumor Agents (DNA Interaction & Gene Regulation) • Natural Products - Anti-inflammatory Agents • Natural Products - Antitumor Reagents • Natural Products for Angiogenesis Research • Natural Products - Nitric Oxide Pathway Modulators • Natural Products - Apoptosis Inducers & Inhibitors • Antitumor Agents (Apoptosis Inducers)
 
 
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