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Oxidative Stress
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ALX-270-097 Revised 07-Sep-06
Ebselen
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SYNONYMS 2-Phenyl-1,2-benzisoselenazol-3-(2H)-one
PRODUCT LINE Oxidative Stress
PRODUCT CATEGORY Peroxynitrite / Scavengers / Detection
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-097-M001   1 mg 12.00 USD Add To Cart
ALX-270-097-M005   5 mg 20.00 USD Add To Cart
ALX-270-097-M025   25 mg 60.00 USD Add To Cart
Product Specification
FORMULA: C13H9NOSe
MW: 274.2
CAS NUMBER: 60940-34-3
PURITY: ≥98% (NMR)
APPEARANCE: White to off-white crystalline solid.
SOLUBILITY: Soluble in DMSO.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light.

Product Description
Selenium-based inhibitor of protein kinase C, NADPH, 5-lipoxygenase, cyclooxygenase (COX) and NADPH oxidase. Anti-inflammatory antioxidant. Mimics glutathione peroxidase. Inhibits oxidative modifications of low density lipoproteins (LDL).
Product Specific Literature References
A novel biologically active seleno-organic compound--III. Effects of PZ 51 (Ebselen) on glutathione peroxidase and secretory activities of mouse macrophages: M.J. Parnham & S. Kindt; Biochem. Pharmacol. 33, 3247 (1984) Abstract
Seleno-organic compounds and the therapy of hydroperoxide-linked pathological conditions: M.J. Parnham & E. Graf; Biochem. Pharmacol. 36, 3095 (1987) Abstract
Kinetic mechanism and substrate specificity of glutathione peroxidase activity of ebselen (PZ51): M. Maiorino, et al.; Biochem. Pharmacol. 37, 2267 (1988) Abstract
Studies on the anti-inflammatory activity of ebselen. Ebselen interferes with granulocyte oxidative burst by dual inhibition of NADPH oxidase and protein kinase C?: I.A. Cotgreave, et al.; Biochem. Pharmacol. 38, 649 (1989) Abstract
T. Nikawa, et al.; Biochem. Pharmacol. 47, 1007 (1994) Abstract
Effects of ebselen and probucol on oxidative modifications of lipid and protein of low density lipoprotein induced by free radicals: N. Noguchi, et al.; Biochim. Biophys. Acta 1213, 176 (1994) Abstract
Strong inhibition of mammalian lipoxygenases by the antiinflammatory seleno-organic compound ebselen in the absence of glutathione: C. Schewe, et al.; Biochem. Pharmacol. 48, 65 (1994) Abstract
Ebselen: a glutathione peroxidase mimic: H. Sies; Meth. Enzymol. 234, 476 (1994) Abstract
Molecular actions of ebselen-an antiinflammatory antioxidant: T. Schewe; Gen. Pharmacol. 26, 1153 (1995) Abstract
Ebselen: H. Sies; Meth. Enzymol. 252, 341 (1995) Abstract
Ebselen as a glutathione peroxidase mimic and as a scavenger of peroxynitrite: H. Sies & H. Masumoto; Adv. Pharmacol. 38, 229 (1997) Abstract
Free radical generation by selenium compounds and their prooxidant toxicity: J.E. Spallholz; Biomed. Environ. Sci. 10, 260 (1997) Abstract
Protection against peroxynitrite by selenoproteins: H. Sies, et al.; Z. Naturforsch. [C] 53, 228 (1998) Abstract
Ebselen protects mice against T cell-dependent, TNF-mediated apoptotic liver injury: G. Tiegs, et al.; J. Pharmacol. Exp. Ther. 287, 1098 (1998) Abstract; Full Text
Further Categories Containing This Product:
Antioxidants, Flavonoids & Free Radical Scavengers Other Products • PKC Inhibitors • Malaria / Related Products • Lipoxygenases / Related Products • Anti-inflammatory Agents Other Products • COX Inhibitors
 
 
ALX-270-125 Revised 25-Apr-08
Resveratrol
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SYNONYMS trans-3,4’,5-Trihydroxystilbene
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-125-M050   50 mg 36.00 USD Add To Cart
ALX-270-125-M100   100 mg 50.00 USD Add To Cart
ALX-270-125-M250   250 mg 95.00 USD Add To Cart
Product Specification
FORMULA: C14H12O3
MW: 228.2
CAS NUMBER: 501-36-0
MERCK INDEX: 14: 8158
SOURCE/HOST: Isolated from Polygonum cuspidatum.
PURITY: ≥98% (HPLC)
APPEARANCE: White to off-white powder.
SOLUBILITY: ~65mg/ml soluble in DMSO, 100% ethanol or dimethyl formamide; slightly soluble in PBS, pH 7.2 (~100 µg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HAZARD: IRRITANT.

Product Description
Shows cancer chemopreventive activity. Specific inhibitor of cyclooxygenase-1 (COX-1). Inhibits the hydroperoxidase activity of COX-1. Antioxidant. Potent activator of human deacetylase SIRT1. Protects against 4-hydroxynonenal (4-HNE) induced oxidative stress and apoptosis.
Product Specific Literature References
Vasorelaxing activity of resveratrol and quercetin in isolated rat aorta: C.K. Chen, et al.; Gen. Pharmacol. 27, 363 (1996) Abstract
Cancer chemopreventive activity of resveratrol, a natural product derived from grapes: M. Jang, et al.; Science 275, 218 (1997) Abstract
Cancer chemopreventive activity of resveratrol: M. Jang & J.M. Pezzuto; Drugs Exp. Clin. Res. 25, 65 (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
Small molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan: K.T. Howitz, et al.; Nature 425, 191 (2003) Abstract
Resveratrol protects against 4-HNE induced oxidative stress and apoptosis in Swiss 3T3 fibroblasts: O. Kutuk, et al.; Biofactors 20, 1 (2004) Abstract
Resveratrol, a polyphenol found in grapes, suppresses oxidative damage and stimulates apoptosis during early colonic inflammation in rats: A.R. Martin, et al.; Biochem. Pharmacol. 67, 1399 (2004) Abstract
Resveratrol interferes with AKT activity and triggers apoptosis in human uterine cancer cells: E. Sexton, et al.; Mol. Cancer 5, 45 (2006) Abstract
Resveratrol and its analogs: Defense against cancer, coronary disease and neurodegenerative maladies or just a fad?: P. Saiko, et al.; Mutat. Res. 658, 68 (2008) Abstract
Related Products
Further Categories Containing This Product:
Natural Products - Chemopreventive Agents • Active Substances from Fruit and Vegetables • Sirtuins / Related Products • Stilbenoids • COX Inhibitors
 
 
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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Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
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-270-231 Revised 28-Feb-08
Caffeic acid
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SYNONYMS 3-(3,4-Dihydroxyphenyl)-2-propenoic acid
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Anti-inflammatory Agents
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-231-M250   250 mg 10.00 USD Add To Cart
ALX-270-231-G001   1 g 14.00 USD Add To Cart
Product Specification
FORMULA: C9H8O4
MW: 180.2
CAS NUMBER: 331-39-5
MERCK INDEX: 14: 1635
SOURCE/HOST: Synthetic.
PURITY: ≥97%
APPEARANCE: Off-white to brown crystalline solid.
SOLUBILITY: Soluble in 100% ethanol, DMSO or dimethyl formamide; also soluble in PBS, pH 7.2.
SHIPPING: AMBIENT
LONG TERM STORAGE: +20°C
USE/STABILITY: Stable for at least 2 years when stored at +20°C. Organic stock solutions are stable for at least 6 months when stored at –20 °C. Store aqueous solutions of the product on ice and use within 12 hours of preparation.

Product Description

Naturally occuring phenolic compound found in many fruits, vegetables and herbs, including coffee. Shows anti-tumor, antiviral, antioxidant and anti-inflammatory effects. Inhibitor of 5- and 12-lipoxygenase (LO).
Product Specific Literature References
Caffeic acid is a selective inhibitor for leukotriene biosynthesis: Y. Koshihara, et al.; Biochim. Biophys. Acta 792, 92 (1984) Abstract
Inhibitory effect of caffeic acid esters on azoxymethane-induced biochemical changes and aberrant crypt foci formation in rat colon: C.V. Rao, et al.; Cancer Res. 53, 4182 (1993) Abstract
Inhibition of arachidonate lipoxygenase activities by 2-(3,4-dihydroxyphenyl)ethanol, a phenolic compound from olives: N. Kohyama, et al.; Biosci. Biotech. Biochem. 61, 347 (1997) Abstract
Caffeic acid derivatives: in vitro and in vivo anti-inflammatory properties: F.M. da Cunha, et al.; Free Radic. Res. 38, 1241 (2004) Abstract
Novel and therapeutic effect of caffeic acid and caffeic acid phenyl ester on hepatocarcinoma cells: complete regression of hepatoma growth and metastasis by dual mechanism: T.W. Chung, et al.; FASEB J. 18, 1670 (2004) Abstract
Anti-HIV activities of natural antioxidant caffeic acid derivatives: toward an antiviral supplementation diet: F. Bailly & P. Cotelle; Curr. Med. Chem. 12, 1811 (2005) Abstract
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Further Categories Containing This Product:
Natural Products - Chemopreventive Agents • Tyrosine Kinase Inhibitors • Active Substances from Fruit and Vegetables • Lipoxygenases / Related Products • Natural Products - Antioxidants • Natural Products - Antiviral / anti-HIV Agents • Phenolic Acids
 
 
ALX-270-244 Revised 03-Apr-08
Caffeic acid phenylethyl ester
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SYNONYMS CAPE
Phenethyl caffeiate
Caffeic acid phenethyl ester
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Anti-inflammatory Agents
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-244-M010   10 mg 20.00 USD Add To Cart
ALX-270-244-M050   50 mg 60.00 USD Add To Cart
Product Specification
FORMULA: C17H16O4
MW: 284.3
CAS NUMBER: 115610-29-2
SOURCE/HOST: Synthetic.
PURITY: ≥97% (HPLC)
APPEARANCE: White to off-white crystalline solid.
SOLUBILITY: Soluble in DMSO, 100% ethanol, methanol, acetone or acetonitrile; insoluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
USE/STABILITY: Stable for at least one year after receipt when stored at –20°C.
HANDLING: Protect from light and moisture.
HAZARD: IRRITANT.

Product Description
Active component of propolis from honeybee hives, known to have anti-mitogenic, anti-carcinogenic, anti-inflammatory, and immunomodulatory properties. Potent and specific inhibitor of NF-κB activation, induced by TNF-α (Prod. No. ALX-522-008 (human) or Prod. No. ALX-522-009 (mouse)), PMA (Prod. No. ALX-445-004) and other inflammatory agents. Exhibits inhibitory activity against HIV-1 integrase (IC50=7µM). Suppresses lipid peroxidation and inhibits ornithine decarboxylase, protein tyrosine kinase and lipoxygenase activities. Induces apoptosis.
Product Specific Literature References
Hydroxylated aromatic inhibitors of HIV-1 integrase: T.R. Burke Jr., et al.; J. Med. Chem. 38, 4171 (1995) Abstract
Apoptosis and altered redox state induced by caffeic acid phenethyl ester (CAPE) in transformed rat fibroblast cells: C. Chiao, et al.; Cancer Res. 55, 3576 (1995) Abstract
Caffeic acid phenethyl ester is a potent and specific inhibitor of activation of nuclear transcription factor NF-kappa B: K. Natarajan, et al.; PNAS 93, 9090 (1996) Abstract
Inhibitory effects of caffeic acid phenethyl ester on the activity and expression of cyclooxygenase-2 in human oral epithelial cells and in a rat model of inflammation: P. Michaluart, et al.; Cancer Res. 59, 2347 (1999) Abstract
Caffeic acid phenethyl ester induces leukocyte apoptosis, modulates nuclear factor-kappa B and suppresses acute inflammation: Z. Orban, et al.; Neuroimmunomodulation 7, 99 (2000) Abstract
Caffeic acid phenethyl ester inhibits T-cell activation by targeting both nuclear factor of activated T-cells and NF-kappaB transcription factors: N. Marquez, et al.; J. Pharmacol. Exp. Ther. 308, 993 (2004) Abstract
Caffeic acid derivatives: in vitro and in vivo anti-inflammatory properties: F.M. da Cunha, et al.; Free Radic. Res. 38, 1241 (2004) Abstract
Drastic effect of several caffeic acid derivatives on the induction of heme oxygenase-1 expression revealed by quantitative real-time RT-PCR: K. Suzuki, et al.; Biofactors 28, 151 (2006) Abstract
Related Products
Further Categories Containing This Product:
Natural Products - Chemopreventive Agents • Natural Products - NF-kB Pathway Inhibitors • Tyrosine Kinase Inhibitors • Natural Products - Protein Kinase Inhibitors • Natural Products - Immunomodulators • Natural Products - Antiviral / anti-HIV Agents • Natural Products - Apoptosis Inducers & Inhibitors • Phenolic Acids • NF-kB Pathway Inhibitors • HIV / AIDS / Related Products
 
 
ALX-270-245 Revised 14-Feb-07
(E)-4-Hydroxynonenal
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SYNONYMS 4-HNE
PRODUCT LINE Oxidative Stress
PRODUCT CATEGORY Oxidative Stress Markers & Reagents / Related Products
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-245-M005   5 mg 128.00 USD Add To Cart
Product Specification
FORMULA: C9H16O2
MW: 156.2
CAS NUMBER: 128946-65-6
RTECS: RA8510000
PURITY: ≥85% (HPLC) (precursor diethylacetal)
FORMULATION: Liquid. Solution in n-hexane.
SOLUBILITY: Soluble in DMSO (washed with nitrogen) or 100% ethanol.
SHIPPING: SHIPPED ON DRY ICE
LONG TERM STORAGE: -80°C
USE/STABILITY: Store solutions on ice and use within 6 hours of preparation.
HANDLING: Protect from light and oxygen. Keep under inert gas. Avoid freeze/thaw cycles.

Product Description
Among the aldehydes formed, 4-HNE is the major product of lipid peroxidation, and it has been suggested to play a major role in liver toxicity associated with lipid peroxidation. Prevents NF-κB activation and TNF expression by inhibiting IκB phosphorylation and subsequent proteolysis.
Product Specific Literature References
Suggested mechanisms for the production of 4-hydroxy-2-nonenal from the autoxidation of polyunsaturated fatty acids: W.A. Pryor & N.A. Porter; Free Radic. Biol. Med. 8, 541 (1990) Abstract
Chemistry and biochemistry of 4-hydroxynonenal, malonaldehyde and related aldehydes: H. Esterbauer, et al.; Free Radic. Biol. Med. 11, 81 (1991) Abstract
Quantitation of 4-hydroxynonenal protein adducts: K. Uchida & E.R. Stadtman; Meth. Enzymol. 233, 371 (1994) Abstract
Histochemical detection of 4-hydroxynonenal protein in Alzheimer amyloid: Y. Ando, et al.; J. Neurol. Sci. 156, 172 (1998) Abstract
Genotoxic lipid peroxidation products: their DNA damaging properties and role in formation of endogenous DNA adducts: P.C. Burcham; Mutagenesis 13, 287 (1998) Abstract
Roles of lipid peroxidation in modulation of cellular signaling pathways, cell dysfunction, and death in the nervous system: J.N. Keller & M.P. Mattson; Rev. Neurosci. 9, 105 (1998) Abstract
4-hydroxynonenal, a product of lipid peroxidation, is increased in the brain in Alzheimer's disease: W.R. Markesbery and M.A. Lovell; Neurobiol. Aging 19, 33 (1998) Abstract
Modification of ion homeostasis by lipid peroxidation: roles in neuronal degeneration and adaptive plasticity: M.P. Mattson; TINS 21, 53 (1998) Abstract
Effects of 4-hydroxynonenal, a lipid peroxidation product, on dopamine transport and Na+/K+ ATPase in rat striatal synaptosomes: P. Morel, et al.; Neurochem. Int. 33, 531 (1998) Abstract
Metabolism of 4-hydroxynonenal, a cytotoxic lipid peroxidation product, in thymocytes as an effective secondary antioxidative defense mechanism: W.G. Siems, et al.; J. Biochem. 123, 534 (1998) Abstract
Oxidative alterations in Alzheimer's disease: W.R. Markesbery & J.M. Carney; Brain Pathol. 9, 133 (1999) Abstract
4-Hydroxynonenal prevents NF-kappaB activation and tumor necrosis factor expression by inhibiting IkappaB phosphorylation and subsequent proteolysis: S. Page, et al.; J. Biol. Chem. 274, 11611 (1999) Abstract; Full Text
The lipid peroxidation product 4-hydroxynonenal impairs glutamate and glucose transport and choline acetyltransferase activity in NSC-19 motor neuron cells: W.A. Pedersen, et al.; Exp. Neurol. 155, 1 (1999) Abstract
The lipid peroxidation product 4-hydroxynonenal inhibits neurite outgrowth, disrupts neuronal microtubules, and modifies cellular tubulin: M.D. Neely, et al.; J. Neurochem. 72, 2323 (1999) Abstract
Multidrug resistance protein MRP1 protects against the toxicity of the major lipid peroxidation product 4-hydroxynonenal: J. Renes, et al.; Biochem. J. 350, 555 (2000) Abstract
The lipid peroxidation product 4-hydroxy-2,3-nonenal inhibits constitutive and inducible activity of nuclear factor kappa B in neurons: S. Camandola, et al.; Brain Res. Mol. Brain Res. 85, 53 (2000) Abstract
IkappaB kinase, a molecular target for inhibition by 4-hydroxy-2- nonenal: C. Ji, et al.; J. Biol. Chem. 276, 18223 (2001) Abstract; Full Text
General Information
BACKGROUND/TECHNICAL INFORMATION (E)-4-Hydroxynonenal-dimethylacetal (Prod. No. ALX-270-375) can be used for making a fresh preparation of HNE.
Related Products
Further Categories Containing This Product:
Lipid Peroxidation
 
 
ALX-270-252 Revised 03-Mar-05
MEG . sodium succinate
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SYNONYMS Mercaptoethylguanidine . sodium succinate
PRODUCT LINE Nitric Oxide Pathway
PRODUCT CATEGORY NOS Inhibitors (NOS Induction & Enzyme Activity)
Ordering Information
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ALX-270-252-M010   10 mg 95.00 USD Add To Cart
Product Specification
FORMULA: C3H10N3S . C4H4O4Na
MW: 120.2 . 139.1
PURITY: ≥90%
APPEARANCE: White solid.
SOLUBILITY: Soluble in water.
SHIPPING: SHIPPED ON BLUE ICE
LONG TERM STORAGE: -20°C
HANDLING: Keep under inert gas. Keep cool and dry. Protect from moisture.

Product Description
Inhibitor of inducible nitric oxide synthase (iNOS; NOS II). Peroxynitrite scavenger.
Product Specific Literature References