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Antioxidants, Flavonoids & Free Radical Scavengers
You are here: Product Lines > Oxidative Stress > Antioxidants, Flavonoids & Free Radical Scavengers
 
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ALX-350-086 Revised 08-Apr-08
Nordihydroguaiaretic acid
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SYNONYMS NDGA
4,4'-(2,3-Dimethyl-1,4-butanediyl)bis[1,2-benzenediol]
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Other Natural Products for Inflammation Research
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ALX-350-086-G001   1 g 62.00 USD Add To Cart
Product Specification
FORMULA: C18H22O4
MW: 302.4
CAS NUMBER: 500-38-9
MERCK INDEX: 14: 6693
SOURCE/HOST: Synthetic.
PURITY: ≥95%
APPEARANCE: Crystalline powder.
SOLUBILITY: Soluble in 100% ethanol, methanol or acetone; slightly soluble in hot water.
SHIPPING: SHIPPED ON BLUE ICE
LONG TERM STORAGE: -20°C

Product Description
Antioxidant and antineoplastic. Lipoxygenase inhibitor. Stimulates the rapid retrograde movement of both Golgi stacks and the trans-Golgi network to the endoplasmatic reticulum (ER). Displays pleiotropic effects on cells, which include apoptosis, cell proliferation, differentiation and chemotaxis. Anticancer agent.
Product Specific Literature References
Inhibition of tumoral cell respiration and growth by nordihydroguaiaretic acid: M. Pavani, et al.; Biochem. Pharmacol. 48, 1935 (1994) Abstract
Nordihydroguaiaretic acid blocks protein transport in the secretory pathway causing redistribution of Golgi proteins into the endoplasmic reticulum: T. Fujiwara, et al.; J. Biol. Chem. 273, 3068 (1998) Abstract; Full Text
Effect of nordihydroguaiaretic acid on the secretion of lipoprotein lipase: S.M. Kim, et al.; J. Biochem. Mol. Biol. 35, 518 (2002) Abstract; Full Text
Mechanisms underlying the activation of large conductance Ca2+-activated K+ channels by nordihydroguaiaretic acid: H. Yamamura, et al.; Jpn. J. Pharmacol. 89, 53 (2002) Abstract
Direct interaction of the Golgi membrane with the endoplasmic reticulum membrane caused by nordihydroguaiaretic acid: T. Fujiwara, et al.; BBRC 301, 927 (2003) Abstract
Stepwise dissection of the intracellular fate of cationic cell-penetrating peptides: R. Fischer, et al.; J. Biol. Chem. 279, 12625 (2004) Abstract; Full Text
The anti-apoptotic effects of nordihydroguaiaretic acid: inhibition of cPLA(2) activation during TNF-induced apoptosis arises from inhibition of calcium signaling: C.A. Culver, et al.; Life Sci. 77, 2457 (2005) Abstract
Nordihydroguaiaretic acid is a potent in vitro scavenger of peroxynitrite, singlet oxygen, hydroxyl radical, superoxide anion and hypochlorous acid and prevents in vivo ozone-induced tyrosine nitration in lungs: E. Floriano-Sanchez, et al.; Free Radic. Res. 40, 523 (2006) Abstract
Nordihydroguaiaretic acid affects multiple dynein-dynactin functions in interphase and mitotic cells: K. Arasaki, et al.; Mol. Pharmacol. 71, 454 (2007) Abstract
Protective role of nordihydroguaiaretic acid (NDGA) against the genotoxic damage induced by ethynodiol diacetate in human lymphocytes in vitro: Y.H. Siddique, et al.; J. Environ. Biol. 28, 279 (2007) Abstract
Further Categories Containing This Product:
Golgi Apparatus • Lipoxygenases / Related Products • Natural Products - Antioxidants • Natural Products - Antitumor Reagents • Antitumor Agents (Enzyme Inhibitors)
 
 
ALX-385-023 Revised 04-Jan-08
PD 98,059
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SYNONYMS 2'-Amino-3'-methoxyflavone
PRODUCT LINE Signal Transduction
PRODUCT CATEGORY MAPK Pathway Inhibitors
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ALX-385-023-M001   1 mg 10.00 USD Add To Cart
ALX-385-023-M005   5 mg 35.00 USD Add To Cart
ALX-385-023-M010   10 mg 60.00 USD Add To Cart
ALX-385-023-M100   100 mg 490.00 USD Add To Cart
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Product Specification
FORMULA: C16H13NO3
MW: 267.3
CAS NUMBER: 167869-21-8
SOURCE/HOST: Synthetic.
PURITY: ≥95%
APPEARANCE: Yellow solid.
SOLUBILITY: Soluble in anhydrous DMSO (25mg/ml), methanol or dichloromethane; slightly soluble in 100% ethanol (0.6mg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light.

Product Description
Potent, cell permeable and selective inhibitor of MEK (MAP kinase kinase). Blocks the activity of MEK and thereby inhibits the phosphorylation and activation of MAP kinase.
Product Specific Literature References
PD 098059 is a specific inhibitor of the activation of mitogen- activated protein kinase kinase in vitro and in vivo: D.R. Alessi, et al.; J. Biol. Chem. 270, 27489 (1995) Abstract; Full Text
A synthetic inhibitor of the mitogen-activated protein kinase cascade: D.T. Dudley, et al.; PNAS 92, 7686 (1995) Abstract
Negative feedback regulation and desensitization of insulin- and epidermal growth factor-stimulated p21ras activation: W.J. Langlois, et al.; J. Biol. Chem. 270, 25320 (1995) Abstract; Full Text
Inhibition of MAP kinase kinase blocks the differentiation of PC-12 cells induced by nerve growth factor: L. Pang, et al.; J. Biol. Chem. 270, 13585 (1995) Abstract; Full Text
Desensitization of Ras activation by a feedback disassociation of the SOS-Grb2 complex: S.B. Waters, et al.; J. Biol. Chem. 270, 20883 (1995) Abstract; Full Text
A phosphatidylinositol 3-kinase inhibitor induces a senescent-like growth arrest in human diploid fibroblast: M. Tresini, et al.; Cancer Res. 58, 1 (1998) Abstract
Inhibition of T cell activation by pharmacologic disruption of the MEK1/ERK MAP kinase or calcineurin signaling pathways results in different modulation of cytokine production: F.J. Dumont, et al.; J. Immunol. 160, 2579 (1998) Abstract
IL-4-induced priming of human intestinal mast cells for enhanced survival and Th2 cytokine generation is reversible and associated with increased activity of ERK1/2 and c-Fos: A. Lorentz, et al.; J. Immunol. 174, 6751 (2005) Abstract; Full Text
Further Categories Containing This Product:
Flavones
 
 
ALX-385-014 Revised 19-Nov-07
Pelargonidin chloride
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Anthocyanidins
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ALX-385-014-M005   5 mg 135.00 USD Add To Cart
Product Specification
FORMULA: C15H11O5Cl
MW: 306.7
CAS NUMBER: 134-04-3
MERCK INDEX: 14: 7071
PURITY: ≥97% (HPLC)
APPEARANCE: Red to brown solid.
SOLUBILITY: Soluble in 100% ethanol or methanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C

Product Description
Antioxidant flavonoid. Nitric oxide scavenger.
Product Specific Literature References
Flavonoids as scavengers of nitric oxide radical: S.A.B.E. Acker, et al.; BBRC 214, 755 (1995) 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
Antioxidant activities of pomegranate fruit extract and its anthocyanidins: delphinidin, cyanidin, and pelargonidin: Y. Noda, et al.; J. Agric. Food Chem. 50, 166 (2002) Abstract
Antigenotoxic effects of the phytoestrogen pelargonidin chloride and the polyphenol chlorogenic acid: S.K. Abraham, et al.; Mol. Nutr. Food Res. 51, 880 (2007) Abstract
Further Categories Containing This Product:
Nitric Oxide Scavengers • Active Substances from Fruit and Vegetables • Natural Products - Nitric Oxide Pathway Modulators • Natural Products - Antioxidants
 
 
ALX-385-015 Revised 12-Aug-08
Peonidin chloride
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SYNONYMS 3,4',5,7-Tetrahydroxy-3'-methoxyflavylium chloride
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Anthocyanidins
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ALX-385-015-M005   5 mg 280.00 USD Add To Cart
Product Specification
FORMULA: C16H13O6Cl
MW: 336.7
CAS NUMBER: 134-01-0
MERCK INDEX: 14: 7143
PURITY: ≥99% (HPLC)
APPEARANCE: Beige to reddish-brown solid.
SOLUBILITY: Soluble in 100% ethanol or water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from light.

Product Description
Antioxidant flavonoid. Shows anti-inflammatory and chemopreventive properties.
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
Peonidin inhibits phorbol-ester-induced COX-2 expression and transformation in JB6 P+ cells by blocking phosphorylation of ERK-1 and -2: J.Y. Kwon, et al.; Ann. N. Y. Acad. Sci. 1095, 513 (2007) Abstract
Further Categories Containing This Product:
Natural Products - Chemopreventive Agents • Natural Products - Antioxidants • Natural Products - Anti-inflammatory Agents
 
 
ALX-270-202 Revised 07-Oct-08
Piceatannol
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SYNONYMS 3,4,3',5'-Tetrahydroxy-trans-stilbene
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Protein Kinase Inhibitors
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ALX-270-202-M001   1 mg 22.00 USD Add To Cart
ALX-270-202-M005   5 mg 62.00 USD Add To Cart
ALX-270-202-M010   10 mg 105.00 USD Add To Cart
ALX-270-202-M050   50 mg 375.00 USD Add To Cart
Product Specification
FORMULA: C14H12O4
MW: 244.3
CAS NUMBER: 10083-24-6
SOURCE/HOST: Synthetic.
PURITY: ≥98%
APPEARANCE: Off-white to light pink crystalline solid.
SOLUBILITY: Soluble in DMSO, dimethyl formamide, 100% ethanol, methanol, acetone or ethyl acetate; slightly soluble in water (1mg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
USE/STABILITY: Unstable in sodium hydroxide.
HANDLING: Protect from light and oxygen.

Product Description
Originally isolated from Euphorbia lagascae. Selective protein tyrosine kinase Syk inhibitor. Activator of human deacetylase SIRT1.
Product Specific Literature References
Synthesis and evaluation of stilbene and dihydrostilbene derivatives as potential anticancer agents that inhibit tubulin polymerization: M. Cushman, et al.; J. Med. Chem. 34, 2579 (1991) Abstract
Inhibition of mast cell Fc epsilon R1-mediated signaling and effector function by the Syk-selective inhibitor, piceatannol: J.M. Oliver, et al.; J. Biol. Chem. 269, 29697 (1994) Abstract; Full Text
The tyrosine phosphorylation of a p72syk-like protein in activated murine resident peritoneal macrophages: K.I. Abu-Lawi & B.M. Sultzer; Cell Mol. Biol. Res. 41, 49 (1995) Abstract
Calcium signaling in endothelial cells involves activation of tyrosine kinases and leads to activation of mitogen-activated protein kinases: I. Fleming, et al.; Circul. Res. 76, 522 (1995) Abstract
Coronary arteriolar flow-induced vasodilation signals through tyrosine kinase: J.M. Muller, et al.; Am. J. Physiol. 270, H1878 (1996) Abstract
Syk, activated by cross-linking the B-cell antigen receptor, localizes to the cytosol where it interacts with and phosphorylates alpha-tubulin on tyrosine: J.D. Peters, et al.; J. Biol. Chem. 271, 4755 (1996) Abstract; Full Text
Src-regulated extracellular signal-related kinase and Syk-regulated c-Jun N-terminal kinase pathways act in conjunction to induce IL-1 synthesis in response to microtubule disruption in HL60 cells: B. Cambien, et al.; J. Immunol. 163, 5079 (1999) Abstract; Full Text
FcepsilonRI-mediated antigen endocytosis turns interferon-gamma-treated mouse mast cells from inefficient into potent antigen-presenting cells: C .Tkaczyk, et al.; Immunology 97, 333 (1999) Abstract
Piceatannol, a stilbene phytochemical, inhibits mitochondrial F0F1-ATPase activity by targeting the F1 complex: J. Zheng & V.D. Ramirez; BBRC 261, 499 (1999) Abstract
Microarray analysis of piceatannol-induced changes in gene expression in human gastric cancer cells : D. Jeoung, et al.; Biotechnology Lett. 24, 463 (2002) Abstract; Full Text
Piceatannol, a Syk-selective tyrosine kinase inhibitor, attenuated antigen challenge of guinea pig airways in vitro: C.J. Seow, et al.; Eur. J. Pharmacol. 443, 189 (2002) Abstract
Small molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan: K.T. Howitz, et al.; Nature 425, 191 (2003)
Further Categories Containing This Product:
Kinases in T Cell Signal Transduction / Related Products • B Cell Receptor [BCR] & Co-Receptors / Related Products • Tyrosine Kinase Inhibitors • Sirtuins / Related Products • Stilbenoids
 
 
ALX-350-114 Revised 03-Dec-07
Polydatin
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SYNONYMS Piceid
Resveratrol-3β-mono-D-glucoside
3-Hydroxy-5-(2-(4-hydroxyphenyl)ethenyl)phenyl-β-D-glucoside
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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ALX-350-114-M010   10 mg 90.00 USD Add To Cart
Product Specification
FORMULA: C20H22O8
MW: 390.4
CAS NUMBER: 65914-17-2
SOURCE/HOST: Isolated from Polygonum cuspidatum.
PURITY: ≥98%
APPEARANCE: White to off-white solid.
SOLUBILITY: Soluble in ethyl acetate, DMSO or water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HAZARD: HARMFUL. IRRITANT.

Product Description
Platelet aggregation inhibitor. Shows multiple effects on vascular smooth muscle cells, myocardial cells, endothelial cells and white blood cells after shock. May inhibit phospholipase A2. Inhibits the expression of various cell adhesion molecules.
Product Specific Literature References
Wine as a biological fluid: history, production, and role in disease prevention: G.J. Soleas, et al.; J. Clin. Lab. Anal. 11, 287 (1997) Abstract
Protective effects of polydatin against CCl(4)-induced injury to primarily cultured rat hepatocytes: Z.S. Huang, et al.; World J. Gastroenterol. 5, 41 (1999) Abstract
Capillary electrophoresis determination, synthesis, and stability of resveratrol and related 3-O-beta-D-glucopyranosides: V. Brandolini, et al.; J. Agric. Food Chem. 50, 7407 (2002) Abstract
The mechanism of Polydatin in shock treatment: K.S. Zhao, et al.; Clin. Hemorheol. Microcirc. 29, 211 (2003) Abstract
Effect of polydatin on phospholipase A2 in lung tissues in rats with endotoxic shock: S.Y. Shu, et al.; Chin. J. Traumatol. 7, 239 (2004) Abstract
Involvement of cell adhesion molecules in polydatin protection of brain tissues from ischemia-reperfusion injury: Y. Cheng, et al.; Brain Res. 1110, 193 (2006) Abstract
Further Categories Containing This Product:
PLA2 Inhibitors • Antithrombotic Agents / Platelet Aggregation Inhibitors / Related Products • Natural Products - Chemopreventive Agents • COX Inhibitors • CD11a, CD18 [LFA-1] & CD54 [ICAM-1], CD102 [ICAM-2], CD50 [ICAM-3] / Related Products • Stilbenoids
 
 
ALX-350-323 Revised 20-Jun-08
Psoralidin
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antitumor Reagents
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ALX-350-323-M001   1 mg 170.00 USD Add To Cart
Product Specification
FORMULA: C20H16O5
MW: 336.3
CAS NUMBER: 18642-23-4
SOURCE/HOST: Isolated from Psoralea corylifolia.
PURITY: ≥97% (HPLC)
APPEARANCE: Yellow solid.
SOLUBILITY: Soluble in DMSO.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light.
HAZARD: TOXIC.
IDENTITY: Identity determined by 1H-NMR, 13C-NMR and MS.

Product Description
Antineoplastic compound. Cytotoxic against stomach cancer cell lines. Shows antibacterial activity against Shigella sonnei and S. flexneri. Shows strong antioxidant activity and inhibits tyrosine phosphatase 1B (PTP1B) activity. Was shown to possess potent antidepressant properties.
Product Specific Literature References
Influence of nitrogen on accumulation of isosojagol (a newly detected coumestan in soybean) and associated isoflavonoids in roots and nodules of mycorrhizal and non-mycorrhizal soybean: D. Morandi and J.L. Le Quere; New Phytol. 117, 75 (1991) Full Text
The cytotoxicity of psoralidin from Psoralea corylifolia: Y.M. Yang, et al.; Planta Med. 62, 353 (1996) Abstract
Coumarins: A. Estevez-Braun and A.G. Gonzalez; Nat. Prod. Rep. 14, 465 (1997) Abstract
Cytotoxic constituents of Psoralea corylifolia: W. Mar, et al.; Arch. Pharm. Res. 24, 211 (2001) Abstract
Antibacterial compounds from the seeds of Psoralea corylifolia: N.A. Khatune, et al.; Fitoterapia 75, 228 (2004) Abstract
Inducible flavone in oats (Avena sativa) is a novel defense against plant-parasitic nematodes: I. R. Soriano, et al.; Nematology 94, 1207 (2004) Full Text
Antioxidants from a Chinese medicinal herb - Psoralea corylifolia L.: G. Jiangning, et al.; Food Chem. 91, 287 (2005)
In vitro protein tyrosine phosphatase 1B inhibitory phenols from the seeds of Psoralea corylifolia: Y.C. Kim, et al.; Planta Med. 71, 87 (2005) Abstract
Antidepressant-like effects of psoralidin isolated from the seeds of Psoralea Corylifolia in the forced swimming test in mice: L.T. Yi, et al.; Prog. Neuropsychopharmacol. Biol. Psychiatry 32, 510 (2008) Abstract
Further Categories Containing This Product:
Monoamine Neurotransmitters & Receptors Other Products • Antitumor Agents (Anti-proliferative) • Natural Products with Antibiotic Activity • Natural Products - Antioxidants • Natural Products - Other Signal Transduction Pathway Modulators • Protein Tyrosine Phosphatases Other Products
 
 
ALX-385-034 Revised 07-Oct-08 New product
Pterostilbene
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SYNONYMS trans-3,5-Dimethoxy-4’-hydroxystilbene
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-385-034-M025   25 mg 90.00 USD Add To Cart
ALX-385-034-M100   100 mg 270.00 USD Add To Cart
ALX-385-034-M500   500 mg 750.00 USD Add To Cart
Product Specification
FORMULA: C16H16O3
MW: 256.3
CAS NUMBER: 537-42-8
SOURCE/HOST: Synthetic.
PURITY: ≥98% (HPLC)
APPEARANCE: Off-white to light brown powder.
SOLUBILITY: Soluble in DMSO (20mg/ml) or methanol; insoluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from light and oxygen.
HAZARD: IRRITANT.
IDENTITY: Identity determined by MS and 1H-NMR.
MELTINGPOINT: 92.7-94.6°C

Product Description
Cell permeable natural methoxylated analog of resveratrol (Prod. No. ALX-270-125). Antioxidant, antiproliferative, anti-inflammatory, anti-hyperglycemic and anti-diabetic agent. Induces apoptosis. Inhibits activator protein 1 (AP-1) and NF-κB activation. Moderately inhibits COX-1 and COX-2 (IC50=19.8μM and 83.9μM).
Product Specific Literature References
Antihyperglycemic activity of phenolics from Pterocarpus marsupium: M Manickam, et al.; J. Nat. Prod. 60, 609 (1997) Abstract
Cancer chemopreventive and antioxidant activities of pterostilbene, a naturally occurring analogue of resveratrol: A.M. Rimando, et al.; J. Agric. Food Chem. 50, 3453 (2002) Abstract
Synthesis and biological evaluation of resveratrol and analogues as apoptosis-inducing agents: M. Roberti, et al.; J. Med. Chem. 46, 3546 (2003) Abstract
Antioxidant activity of hydroxystilbene derivatives in homogeneous solution: R. Amorati, et al.; J. Org. Chem. 69, 7101 (2004) Abstract
Association between pterostilbene and quercetin inhibits metastatic activity of B16 melanoma: P. Ferrer, et al.; Neoplasia 7, 37 (2005) Abstract; Full Text
Pterostilbene, a new agonist for the peroxisome proliferator-activated receptor alpha-isoform, lowers plasma lipoproteins and cholesterol in hypercholesterolemic hamsters: A.M. Rimando, et al.; J. Agric. Food Chem. 53, 3403 (2005) Abstract
Selective COX-2 inhibition by a Pterocarpus marsupium extract characterized by pterostilbene, and its activity in healthy human volunteers: S. Hougee, et al.; Planta Med. 71, 387 (2005) Abstract
Effect of pterostilbene on hepatic key enzymes of glucose metabolism in streptozotocin- and nicotinamide-induced diabetic rats: L. Pari & M.A. Satheesh; Life Sci. 79, 641 (2006) Abstract
Effect of natural analogues of trans-resveratrol on cytochromes P4501A2 and 2E1 catalytic activities: R. Mikstacka, et al.; Xenobiotica 36, 269 (2006) Abstract
The antioxidant role of pterostilbene in streptozotocin-nicotinamide-induced type 2 diabetes mellitus in Wistar rats: M. Amarnath Satheesh & L. Pari; J. Pharm. Pharmacol. 58, 1483 (2006) Abstract
Pharmacometri