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ALX-350-320 Revised 11-Mar-08
3,5-Di-O-caffeoylquinic acid
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SYNONYMS 3,5-CQA
Isochlorogenic acid
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-350-320-M001   1 mg 95.00 USD Add To Cart
ALX-350-320-M005   5 mg 380.00 USD Add To Cart
Product Specification
FORMULA: C25H24O12
MW: 516.5
CAS NUMBER: 2450-53-5
SOURCE/HOST: Isolated from Cynara scolymus.
PURITY: ≥97% (HPLC)
APPEARANCE: Grey to yellow crystalline solid.
SOLUBILITY: Soluble in DMSO or 100% ethanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light.
IDENTITY: Identity determined by 1H-NMR, 13C-NMR and MS.

Product Description
Antioxidant. Shows antiproliferative activity.
Product Specific Literature References
Biochemistry on postharvest metabolism and deterioration of some tropical tuberous crops: I. Uritani; Bot. Bull. Acad. Sinica 40, 177 (1999)
In vitro antioxidative effects and tyrosinase inhibitory activities of seven hydroxycinnamoyl derivatives in green coffee beans: K. Iwai, et al.; J. Agric. Food Chem. 52, 4893 (2004) Abstract
Antioxidant and antiproliferative activities of sweet potato (Ipomoea batatas [L.] Lam "Tainong 57"): D.J. Huang, et al.; Bot. Bull. Acad. Sinica 45, 179 (2004)
Changes in caffeic acid derivatives in sweet potato (Ipomoea batatas L.) during cooking and processing: M. Takenaka, et al.; Biosci. Biotechnol. Biochem. 70, 172 (2006) Abstract; Full Text
Further Categories Containing This Product:
Active Substances from Fruit and VegetablesFree Radical ScavengersPhenolic Acids
 
 
ALX-350-253 Revised 28-Sep-07
Carazostatin
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-350-253-C100   100 µg 45.00 USD Add To Cart
ALX-350-253-M001   1 mg 110.00 USD Add To Cart
Product Specification
FORMULA: C20H25NO
MW: 295.4
CAS NUMBER: 126168-32-9
SOURCE/HOST: Isolated from Streptomyces chrestomyceticus.
APPEARANCE: Pale yellow solid.
SOLUBILITY: Soluble in methanol, abs. ethanol or DMSO. Insoluble in water.
SHIPPING: SHIPPED ON DRY ICE
LONG TERM STORAGE: -20°C
HANDLING: Protect from light and air. Keep under inert gas

Product Description
Antioxidant. Free radical scavenger. Potent inhibitor of lipid peroxidation.
Product Specific Literature References
Studies on free radical scavenging substances from microorganisms. I. Carazostatin, a new free radical scavenger produced by Streptomyces chromofuscus DC 118: S. Kato, et al.; J. Antibiot. (Tokyo) 42, 1879 (1989) Abstract
Antioxidant activities of natural and synthetic carbazoles: M. Iwatsuki, et al.; Biofactors 4, 123 (1993) Abstract
In vitro and ex vivo free radical scavenging activities of carazostatin, carbazomycin B and their derivatives: S. Kato, et al.; J. Antibiot. (Tokyo) 46, 1859 (1993) Abstract
Total Syntheses of Carazostatin, Hyellazole, and Carbazoquinocins B-F: T. Choshi, et al.; J. Org. Chem. 62, 2535 (1997) Abstract
Further Categories Containing This Product:
Free Radical ScavengersLipid Peroxidation
 
 
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
 
 
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
 
 
ALX-350-021 Revised 05-Apr-08
Esculin . hydrate
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SYNONYMS 6,7-Dihydroxycoumarin 6-glucoside
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-350-021-G005   5 g 25.00 USD Add To Cart
Product Specification
FORMULA: C15H16O9 . H2O
MW: 340.3 . 18.0
CAS NUMBER: 531-75-9
MERCK INDEX: 14: 3698
RTECS: DJ3085000
PURITY: ≥98% (HPLC)
APPEARANCE: White to off-white powder.
SOLUBILITY: Soluble in methanol (50mg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C

Product Description
Antioxidant used as a skin protectant. Shows vitamin P activity. Protects cells against DNA damage. Reduces ROS levels. Inhibits carcinogenesis.
Product Specific Literature References
HPLC Analysis of Esculin and Fraxin in Horse-Chestnut Bark (Aesculus hippocastanum L.): G. Stanic, et al.; Croatica Chemica Acta 72, 827 (1999) Full Text
Suppression of lipid hydroperoxide-induced oxidative damage to cellular DNA by esculetin: T. Kaneko, et al.; Biol. Pharm. Bull. 26, 840 (2003) Abstract
Effects of esculin and esculetin on the survival of Escherichia coli O157 in human faecal slurries, continuous-flow simulations of the rumen and colon and in calves: S.H. Duncan, et al.; Br. J. Nutr. 91, 749 (2004) Abstract
Inhibitory effect of esculin on oxidative DNA damage and carcinogenesis induced by N-nitrosobis(2-oxopropyl)amine in hamster pancreas: T. Kaneko, et al.; Biofactors 22, 83 (2004) Abstract
Anti-apoptotic effect of esculin on dopamine-induced cytotoxicity in the human neuroblastoma SH-SY5Y cell line: D.L. Zhao, et al.; Neuropharmacology 53, 724 (2007) Abstract
 
 
ALX-270-418 Revised 16-Jun-08
Gallotannin
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SYNONYMS Tannic acid
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Other Natural Products - DNA Regulation / Transcription
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ALX-270-418-G001   1 g 10.00 USD Add To Cart
Product Specification
FORMULA: C76H52O46
MW: 1701.2
CAS NUMBER: 1401-55-4
MERCK INDEX: 14: 9052
RTECS: WW5075000
SOURCE/HOST: Occurs in the bark and fruit of many plants, notably in the bark of the oak species, in sumac and myrobalan.
PURITY: >95%
APPEARANCE: Beige to light brown powder.
SOLUBILITY: Soluble in water, 100% ethanol, acetone or warm glycerol.
SHIPPING: AMBIENT
SHORT TERM STORAGE: +4°C
LONG TERM STORAGE: +4°C
HANDLING: Protect from light.
HAZARD: IRRITANT.

Product Description
Inhibitor of poly(ADP-ribose) glycohydrolase (PARG). Cytoprotective in oxidatively stressed cells. Inhibitor of endothelial nitric oxide synthase (eNOS; NOS III) and weak inhibitor of inducible (iNOS; NOS II) and neuronal nitric oxide synthase (nNOS; NOS I). Induces cyclooxygenase-2 (COX-2) expression. Free radical scavenger.
Product Specific Literature References
Inhibition of constitutive endothelial NO-synthase activity by tannin and quercetin: M. Chiesi & R. Schwaller; Biochem. Pharmacol. 49, 495 (1995) Abstract
The poly(ADP-ribose) glycohydrolase inhibitor gallotannin blocks oxidative astrocyte death: W. Ying, et al.; Neuroreport 11, 1385 (2000) Abstract
Green tea polyphenols and tannic acid act as potent inhibitors of phorbol ester-induced nitric oxide generation in rat hepatocytes independent of their antioxidant properties: R.C. Srivastava, et al.; Cancer Lett. 153, 1 (2000) Abstract
Inhibition of poly(ADP-ribose) glycohydrolase by gallotannin selectively up-regulates expression of proinflammatory genes: E. Rapizzi, et al.; Mol. Pharmacol. 66, 890 (2004) Abstract
Tannic acid in plant dust causes airway obstruction: D. Taubert, et al.; Thorax 60, 789 (2005) Abstract
Prominent free radicals scavenging activity of tannic acid in lead-induced oxidative stress in experimental mice: I.H. El-Sayed, et al.; Toxicol. Ind. Health 22, 157 (2006) Abstract
The efficacy of protective effects of tannic acid, gallic acid, ellagic acid, and propyl gallate against hydrogen peroxide-induced oxidative stress and DNA damages in IMR-90 cells: C.H. Chen, et al.; Mol. Nutr. Food Res. 51, 962 (2007) Abstract
 
 
ALX-385-007 Revised 07-Oct-08
Luteolin
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SYNONYMS 3',4',5,7-Tetrahydroxyflavone
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Flavones
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ALX-385-007-M010   10 mg 15.00 USD Add To Cart
ALX-385-007-M050   50 mg 45.00 USD Add To Cart
Product Specification
FORMULA: C15H10O6
MW: 286.2
CAS NUMBER: 491-70-3
MERCK INDEX: 14: 5614
RTECS: LK9275210
PURITY: ≥90%
APPEARANCE: Yellow powder.
SOLUBILITY: Soluble in methanol, alkaline solutions; slightly soluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +20°C

Product Description
Antioxidant flavonoid. Inhibits VEGF-induced angiogenesis. Inhibitor of phosphoinositide 3-kinase (PI(3)K). Inhibitor of fatty acid synthase (FAS). Apoptosis inducer.
Product Specific Literature References
Structure-antioxidant activity relationships of flavonoids and phenolic acids: C.A. Rice-Evans, et al.; Free Radical Biol. & Med. 20, 933 (1996), (Review) Abstract
Luteolin inhibits vascular endothelial growth factor-induced angiogenesis; inhibition of endothelial cell survival and proliferation by targeting phosphatidylinositol 3'-kinase activity: E. Bagli, et al.; Cancer Res. 64, 7936 (2004)
Dietary flavonoids: bioavailability, metabolic effects, and safety: J.A. Ross & C.M. Kasum; Annu. Rev. Nutr. 221, 19 (2002), (Review) Abstract
Pharmacological inhibitors of Fatty Acid Synthase (FASN)--catalyzed endogenous fatty acid biogenesis: a new family of anti-cancer agents?: R. Lupu & J. A. Menendez; Curr. Pharm. Biotechnol. 7, 483 (2006), (Review) Abstract
 
 
ALX-350-346 Revised 12-Sep-08
Silybin
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SYNONYMS Silibinin
2,3-Dihydro-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-6-(3,5,7-trihydroxy-4-oxobenzopyran-2-yl)benzodioxin
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Chemopreventive Agents
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ALX-350-346-G001   1 g 10.00 USD Add To Cart
ALX-350-346-G005   5 g 35.00 USD Add To Cart
Product Specification
FORMULA: C25H22O10
MW: 482.4
CAS NUMBER: 22888-70-6; 65666-07-1
MERCK INDEX: 14: 8532
RTECS: DJ2981770
SOURCE/HOST: Originally isolated from Silybum marianum.
PURITY: ≥98%
APPEARANCE: White to light yellow solid.
SOLUBILITY: Soluble in 100% ethanol (0.1mg/ml), DMSO (10mg/ml), dimethyl formamide (20mg/ml), acetone or methanol; 0.5mg/ml soluble in a 1:9 solution of dimethyl formamide:PBS (pH 7.2) (dilute the dimethyl formamide solution with PBS).
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
USE/STABILITY: We do not recommend storing aqueous solutions for more than one day.
HAZARD: IRRITANT.

Product Description
Mixture of silybin A and silybin B. Major active constituent of silymarin. Anti-inflammatory, cytoprotective and anti-cancer compound. Shows chemopreventive effect against skin cancer. Inhibits mitogen-activated protein kinase (MAPK). Inhibits P-glycoprotein (Pgp)-mediated cellular efflux. Inhibits cytochrome P450 enzymes. Apoptosis inducer. Blocks the production of superoxide in Kupffer cells (EC50=100µM). Antioxidant. Free radical scavenger.
Product Specific Literature References
[On the chemistry of silymarin (silybin), the active principle of the fruits from Silybum marianum (L.) Gaertn. (Carduus marianus L.)]: H. Wagner, et al.; Arzneimittelforschung 18, 688 (1968) Abstract
Inhibition of Kupffer cell functions as an explanation for the hepatoprotective properties of silibinin: C. Dehmlow, et al.; Hepatology 23, 749 (1996) Abstract; Full Text
Silibinin decreases prostate-specific antigen with cell growth inhibition via G1 arrest, leading to differentiation of prostate carcinoma cells: implications for prostate cancer intervention: X. Zi & R. Agarwal; PNAS 96, 7490 (1999) Abstract; Full Text
The flavanolignan silybin and its hemisynthetic derivatives, a novel series of potential modulators of P-glycoprotein: M. Maitrejean, et al.; Bioorg. Med. Chem. Lett. 10, 157 (2000) Abstract
Silibinin inhibits constitutive and TNFalpha-induced activation of NF-kappaB and sensitizes human prostate carcinoma DU145 cells to TNFalpha-induced apoptosis: S. Dhanalakshmi, et al.; Oncogene 21, 1759 (2002) Abstract; Full Text
Silibinin upregulates the expression of cyclin-dependent kinase inhibitors and causes cell cycle arrest and apoptosis in human colon carcinoma HT-29 cells: C. Agarwal, et al.; Oncogene 22, 8271 (2003) Abstract; Full Text
Epidermal growth factor receptor mediates silibinin-induced cytotoxicity in a rat glioma cell line: L. Qi, et al.; Cancer Biol. Ther. 2, 526 (2003) Abstract; Full Text
Silibinin down-regulates survivin protein and mRNA expression and causes caspases activation and apoptosis in human bladder transitional-cell papilloma RT4 cells: A.K. Tyagi, et al.; BBRC 312, 1178 (2003) Abstract
Silibinin causes cell cycle arrest and apoptosis in human bladder transitional cell carcinoma cells by regulating CDKI-CDK-cyclin cascade, and caspase 3 and PARP cleavages: A. Tyagi, et al.; Carcinogenesis 25, 1711 (2004) Abstract; Full Text
Silibinin protects against photocarcinogenesis via modulation of cell cycle regulators, mitogen-activated protein kinases, and Akt signaling: G. Mallikarjuna, et al.; Cancer Res. 64, 6349 (2004) Abstract; Full Text
Silibinin up-regulates DNA-protein kinase-dependent p53 activation to enhance UVB-induced apoptosis in mouse epithelial JB6 cells: S. Dhanalakshmi, et al.; J. Biol. Chem. 280, 20375 (2005) Abstract; Full Text
Silibinin inhibits invasion of oral cancer cells by suppressing the MAPK pathway: P.N. Chen, et al.; J. Dent. Res. 85, 220 (2006) Abstract; Full Text
Pilot study of oral silibinin, a putative chemopreventive agent, in colorectal cancer patients: silibinin levels in plasma, colorectum, and liver and their pharmacodynamic consequences: C. Hoh, et al.; Clin. Cancer Res. 12, 2944 (2006) Abstract; Full Text
Silibinin prevents UV-induced HaCaT cell apoptosis partly through inhibition of caspase-8 pathway: L.H. Li, et al.; Biol. Pharm. Bull. 29, 1096 (2006) Abstract; Full Text
Silibinin inhibits UVB- and epidermal growth factor-induced mitogenic and cell survival signaling involving activator protein-1 and nuclear factor-kappaB in mouse epidermal JB6 cells: R.P. Singh, et al.; Mol. Cancer Ther. 5, 1145 (2006) Abstract; Full Text
Silibinin activates p53-caspase 2 pathway and causes caspase-mediated cleavage of Cip1/p21 in apoptosis induction in bladder transitional-cell papilloma RT4 cells: evidence for a regulatory loop between p53 and caspase 2: A. Tyagi, et al.; Carcinogenesis 27, 2269 (2006) Abstract; Full Text
Silibinin inhibits constitutive activation of Stat3, and causes caspase activation and apoptotic death of human prostate carcinoma DU145 cells: C. Agarwal, et al.; Carcinogenesis 28, 1463 (2007) Abstract
Effects and mechanisms of silibinin on human hepatoma cell lines: J.J. Lah, et al.; World J. Gastroenterol. 13, 5299 (2007) Abstract; Full Text
Silibinin suppresses PMA-induced MMP-9 expression by blocking the AP-1 activation via MAPK signaling pathways in MCF-7 human breast carcinoma cells: S.O. Lee, et al.; BBRC 354, 165 (2007) Abstract
Immunosuppressive effect of silibinin in experimental autoimmune encephalomyelitis: K. Min, et al.; Arch. Pharm. Res. 30, 1265 (2007) Abstract
Silibinin sensitizes human glioma cells to TRAIL-mediated apoptosis via DR5 up-regulation and down-regulation of c-FLIP and survivi: Y.G. Son, et al.; Cancer Res. 67, 8274 (2007) Abstract
Silibinin impairs constitutively active TGFalpha-EGFR autocrine loop in advanced human prostate carcinoma cells: A. Tyagi, et al.; Pharm. Res. Epub ahead of print, (2008) Abstract
 
 
ALX-350-305 Revised 08-Apr-08
Tiliroside
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-350-305-M001   1 mg 140.00 USD Add To Cart
Product Specification