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Natural Products for Cancer Research
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ALX-270-047 Revised 26-Sep-07
Aristolochic acid
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SYNONYMS 8-Methoxy-6-nitrophenanthrol(3,4-d)-1,3-dioxide-5-carboxylic acid
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Other Signal Transduction Pathway Modulators
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-047-M025   25 mg 25.00 USD Add To Cart
ALX-270-047-M100   100 mg 90.00 USD Add To Cart
Product Specification
FORMULA: C17H11NO7
MW: 341.3
CAS NUMBER: 313-67-7
MERCK INDEX: 14: 786
RTECS: CF3325000
SOURCE/HOST: Isolated from Aristolochia clematis.
PURITY: ≥97% (~1:1 mixture of aristolochic acids I (A) and II (B))
APPEARANCE: Yellow solid.
SOLUBILITY: Soluble in DMSO or 100% ethanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: +20°C
HAZARD: MAY BE CARCINOGENIC. TOXIC. MAY BE MUTAGENIC.

Product Description
Phospholipase A2 (PLA2) inhibitor active against the enzymes found in many snake venoms as well as those of human platelets and synovial fluids. Inhibits ionophore-stimulated PLA2 activity in human neutrophils. Has been shown to be nephropathic and carcinogenic.
Product Specific Literature References
Characterization of three edema-inducing phospholipase A2 enzymes from habu (Trimeresurus flavoviridis) venom and their interaction with the alkaloid aristolochic acid: B.S. Vishwanath, et al.; Toxicon 25, 501 (1987) Abstract
Interaction of aristolochic acid with Vipera russelli phospholipase A2: its effect on enzymatic and pathological activities: B.S. Vishwanath & T.V. Gowda; Toxicon 25, 929 (1987) Abstract
Interaction of phospholipase A2 from Vipera russelli venom with aristolochic acid: a circular dichroism study: B.S. Vishwanath, et al.; Toxicon 25, 939 (1987) Abstract
Edema-inducing activity of phospholipase A2 purified from human synovial fluid and inhibition by aristolochic acid: B.S. Vishwanath, et al.; Inflammation 12, 549 (1988) Abstract
Effects of aristolochic acid on phospholipase A2 activity and arachidonate metabolism of human neutrophils: M.D. Rosenthal, et al.; Biochim. Biophys. Acta 1001, 3 (1989) Abstract
Suramin alters phosphoinositide synthesis and inhibits growth factor receptor binding in HT-29 cells: R. Kopp & A. Pfeiffer; Cancer Res. 50, 6490 (1990) Abstract
The effects of the phospholipase A2 inhibitors aristolochic acid and PGBx on A23187-stimulated mobilization of arachidonate in human neutrophils are overcome by diacylglycerol or phorbol ester: M.D. Rosenthal, et al.; Biochim. Biophys. Acta 1126, 319 (1992) Abstract
Evidence for different mechanisms involved in the formation of lyso platelet-activating factor and the calcium-dependent release of arachidonic acid from human neutrophils: J.D. Winkler, et al.; Biochem. Pharmacol. 44, 2055 (1992) Abstract
Selective inhibition of group II phospholipase A2 by quercetin: M. Lindahl & C. Tagesson; Inflammation 17, 573 (1993) Abstract
Detection of DNA adducts formed by aristolochic acid in renal tissue from patients with Chinese herbs nephropathy: H.H. Schmeiser, et al.; Cancer Res. 56, 2025 (1996) Abstract
Aristolochic acid and ’Chinese herbs nephropathy’: a review of the evidence to date: J.P. Cosyns; Drug Saf. 26, 33 (2003), Review Abstract
Effect of aristolochic acid on intracellular calcium concentration and its links with apoptosis in renal tubular cells: Y.H. Hsin, et al.; Apoptosis 11, 2167 (2006) Abstract
 
 
ALX-270-109 Revised 14-Apr-08
Ophiobolin A
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SYNONYMS Cochliobolin A
Ophiobalin
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Other Signal Transduction Pathway Modulators
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Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-109-MC01   0.1 mg 50.00 USD Add To Cart
ALX-270-109-M001   1 mg 220.00 USD Add To Cart
Product Specification
FORMULA: C25H36O4
MW: 400.6
CAS NUMBER: 4611-05-6
RTECS: RL1576000
SOURCE/HOST: Isolated from Bipolaris leersia MST-FP107.
PURITY: ≥95% (HPLC)
APPEARANCE: White to off-white solid.
SOLUBILITY: Soluble in dimethyl formamide, DMSO, 100% ethanol or methanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light.
HAZARD: HARMFUL.

Product Description
Cell permeable antagonist of calmodulin. Inhibits Ca2+/calmodulin-dependent phosphodiesterase. Inhibits P-glycoprotein-mediated transport. Exhibits antibacterial, antitumor and nematocidal activities. Phytotoxic.
Product Specific Literature References
The structure of ophiobolin, a C25 terpenoid having a novel skeleton: S. Nozoe, et al.; JACS 87, 4968 (1965) Abstract
The constitution of cochliobolin: L. Canonica, et al.; THL 7, 1211 (1966)
Ophiobolin A. A natural product inhibitor of calmodulin: P.C. Leung, et al.; J. Biol. Chem. 259, 2742 (1984) Abstract; Full Text
Role of Calmodulin Inhibition in the Mode of Action of Ophiobolin A: P.C. Leung, et al.; Plant Physiol. 77, 303 (1985) Abstract; Full Text
Characterization of the interaction of ophiobolin A and calmodulin: P.C. Leung, et al.; Int. J. Biochem. 20, 1351 (1988) Abstract
Microbial metabolites of ophiobolin A and antimicrobial evaluation of ophiobolins: E. Li, et al.; J. Nat. Prod. 58, 74 (1995) Abstract
The biology of ophiobolins: T.K. Au, et al.; Life Sci. 67, 733 (2000), Review Abstract
Calmodulin and lipid binding to synaptobrevin regulates calcium-dependent exocytosis: S. Quetglas, et al.; EMBO J. 21, 3970 (2002) Abstract; Full Text
Herbicidal potential of ophiobolins produced by Drechslera gigantea: A. Evidente, et al.; J. Agric. Food Chem. 54, 1779 (2006) Abstract
Inhibition of P-glycoprotein-mediated transport by terpenoids contained in herbal medicines and natural products: N. Yoshida, et al.; Food Chem. Toxicol. 44, 2033 (2006) Abstract
 
 
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
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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
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ALX-270-160 Revised 27-Sep-07
Castanospermine
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SYNONYMS (1S,6S,7R,8R,8aR)-1,6,7,8-Tetrahydroxyoctahydroindolizine
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Other Signal Transduction Pathway Modulators
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-160-M010   10 mg 60.00 USD Add To Cart
ALX-270-160-M050   50 mg 180.00 USD Add To Cart
Product Specification
FORMULA: C8H15NO4
MW: 189.2
CAS NUMBER: 79831-76-8
MERCK INDEX: 14: 1896
SOURCE/HOST: Isolated from Castanospermum australe seeds.
PURITY: ≥98%
APPEARANCE: White to off-white solid.
SOLUBILITY: Soluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from moisture.

Product Description
Plant alkaloid. Potent inhibitor of α- and β-glucosidase activity in fibroblast extracts; inhibits the glycoprotein processing cycle. Exhibits antiviral properties. Prevents angiogenesis.
Product Specific Literature References
Castanospermine inhibits the processing of the oligosaccharide portion of the influenza viral hemagglutinin: Y.T. Pan, et al.; Biochemistry 22, 3975 (1983) Abstract
Glycoproteins: their structure, biosynthesis and possible clinical implications: H. Schachter; Clin. Biochem. 17, 3 (1984) Abstract
The effects of processing inhibitors of N-linked oligosaccharides on the intracellular migration of glycoprotein E2 of mouse hepatitis virus and the maturation of coronavirus particles: R. Repp, et al.; J. Biol. Chem. 260, 15873 (1985) Abstract; Full Text
Effects of the anti-inflammatory compounds castanospermine, mannose-6- phosphate and fucoidan on allograft rejection and elicited peritoneal exudates: M.R. Bartlett, et al.; Immunol. Cell Biol. 72, 367 (1994) Abstract
Antiviral activity and metabolism of the castanospermine derivative MDL 28,574, in cells infected with herpes simplex virus type 2: S.P. Ahmed, et al.; BBRC 208, 267 (1995) Abstract
The alpha-glucosidase I inhibitor castanospermine alters endothelial cell glycosylation, prevents angiogenesis, and inhibits tumor growth: R. Pili, et al.; Cancer Res. 55, 2920 (1995) Abstract
Perturbation of free oligosaccharide trafficking in endoplasmic reticulum glucosidase I-deficient and castanospermine-treated cells: C. Durrant & S.E. Moore; Biochem. J. 365, 239 (2002) Abstract
 
 
ALX-270-209 Revised 05-Apr-08
Etoposide
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SYNONYMS 4-Desmethylepipodophyllotoxin 9-(4,6-O-ethylidene)-β-D-glucopyranoside
VP-16-213
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Topoisomerase Inhibitors
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-209-M025   25 mg 30.00 USD Add To Cart
ALX-270-209-M100   100 mg 65.00 USD Add To Cart
ALX-270-209-M500   500 mg 260.00 USD Add To Cart
Product Specification
FORMULA: C29H32O13
MW: 588.6
CAS NUMBER: 33419-42-0
MERCK INDEX: 14: 3886
RTECS: KC0190000
SOURCE/HOST: Semisynthetic derivative of podophyllotoxin.
PURITY: ≥99%
APPEARANCE: White to off-white powder.
SOLUBILITY: Soluble in DMSO, dimethyl formamide, ethyl ether or chloroform:methanol (1:1); slightly soluble in methanol or acetone; insoluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +20°C
USE/STABILITY: Store solutions in DMSO at 4°C. For long term storage prepare aliquots and store at -20°C.
HANDLING: Protect from light and moisture.
HAZARD: MAY BE CARCINOGENIC. TOXIC.

Product Description
Antitumor reagent. Topoisomerase II inhibitor. Induces apoptosis by FasL. Activates p53 resulting in upregulated expression of TRAIL-R2 (DR5) and Bak to overcome TRAIL resistance in Bax-deficient human colon carcinoma cancer cells.
Product Specific Literature References
The podophyllotoxin derivatives VP16-213 and VM26: B.F. Issell; Cancer Chemother. Pharmacol. 7, 73 (1982) Abstract
Etoposide: four decades of development of a topoisomerase II inhibitor: K.R. Hande; Eur. J. Cancer 34, 1514 (1998) Abstract
Etoposide sensitivity of human prostatic cancer cell lines PC-3, DU 145 and LNCaP: M. Salido, et al.; Histol. Histopathol. 14, 125 (1999) Abstract
A systematic review of the role of etoposide and cisplatin in the chemotherapy of small cell lung cancer with methodology assessment and meta-analysis: C. Mascaux, et al.; Lung Cancer 30, 23 (2000) Abstract
Distinct pathways for stimulation of cytochrome c release by etoposide: J.D. Robertson, et al.; J. Biol. Chem. 275, 32438 (2000) Abstract; Full Text
Ordering of ceramide formation, caspase activation, and Bax/Bcl-2 expression during etoposide-induced apoptosis in C6 glioma cells: M. Sawada, et al.; Cell Death Differ. 7, 761 (2000) Abstract
Etoposide-induced apoptosis is not associated with the fas pathway in acute myeloblastic leukemia cells: T. Siitonen, et al.; Leuk. Res. 24, 281 (2000) Abstract
Early caspase activation in leukemic cells subject to etoposide-induced G2-M arrest: evidence of commitment to apoptosis rather than mitotic cell death: R.J. Sleiman & B.W. Stewart; Clin. Cancer Res. 6, 3756 (2000) Abstract; Full Text
Cell cycle phase specificity in the potentiation of etoposide-induced DNA damage and apoptosis by KN-62, an inhibitor of calcium-calmodulin- dependent enzymes: M. Aoyama, et al.; Biochem Pharmacol 61, 49 (2001) Abstract
Deacetylase activity associates with topoisomerase II and is necessary for etoposide-induced apoptosis: C.A. Johnson, et al.; J. Biol. Chem. 276, 4539 (2001) Abstract; Full Text
In vitro topo II-DNA complex accumulation and cytotoxicity of etoposide in leukaemic cells from patients with acute myelogenous and chronic lymphocytic leukaemia: Y. Wang, et al.; Leuk. Res. 25, 133 (2001) Abstract
Etoposide: discovery and medicinal chemistry: P. Meresse, et al.; Curr. Med. Chem. 11, 2443 (2004), Review Abstract
Etoposide, topoisomerase II and cancer: E.L. Baldwin & N. Osheroff; Curr. Med. Chem. Anticancer Agents 5, 363 (2005), Review Abstract
 
 
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
 
 
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
 
 
ALX-270-253 Revised 18-Mar-08
Rosmarinic acid