UN2811, Biologically Active Small Molecules
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Xylazine
Cayman ChemicalAn agonist of α2 adrenergic receptors (Ki = 194 nM); used for sedation, anesthesia, and analgesia in non-human mammals.
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Cylindrospermopsin
Cayman ChemicalA cyanobacterial toxin that targets protein and glutathione synthesis in hepatocytes (IC50s = 1.3 and 2.4 µM, respectively), inhibits uridine monophosphate synthase complex activity (Ki = 10 µM), and induces DNA damage.
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Microcystin-RR
Cayman ChemicalA toxin produced by cyanobacteria that inhibits the catalytic activity of protein phosphatases PP1C, PP1γ, and PP2A with Ki values of 0.15, 0.24, and 0.018 nM, respectively.
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Aminopterin
LKT LabsAminopterin is a folic acid analog and derivative of pterin; it is very similar to methotrexate in structure. Aminopterin exhibits anticancer chemotherapeutic and immunosuppressive activities. Like other folic acid analogs, aminopterin inhibits dihydrofolate reductase, depleting nucleotide pools…
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(+)-Etomoxir (sodium salt)
Cayman ChemicalAn irreversible inhibitor of carnitine palmitoyltransferase 1, a mitochondrial enzyme involved in fatty acid β-oxidation (IC50 = 5-20 nM in rat liver); also acts as a direct agonist of PPARα.
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Genipin
Cayman ChemicalA protein cross-linking agent isolated from G. jasminoides Ellis; inhibits UCP2 activity; 5 µM genipin increases glucose-stimulated insulin secretion in isolated pancreatic islets chronically exposed to high levels of glucose; induces apoptosis in FaO rat hepatoma cells and human…
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Paxilline
Cayman ChemicalAn indole diterpene which potently and reversibly inhibits large conductance Ca2+-activated K+ (BKCa) channels, as shown in patch clamp (Ki = 1.9 nM) and whole smooth muscle cell studies (Ki = 35.7 nM).
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Nicardipine (hydrochloride)
Cayman ChemicalA dihydropyridine L-type calcium channel antagonist that displays antihypertensive and antianginal activity; selectively inhibits adenosine A3 receptors (Ki = 3.25 µM) and CYP3A4 catalytic activity (IC50 = 0.148 µM); activates TRPA1 channels, producing an increase in Ca2+…
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6-Thioguanine
Cayman ChemicalA thio analog of the purine base guanine that incorporates into DNA during replication, inducing double-strand breaks that destabilize its structure and result in cytotoxicity; used as a chemotherapeutic for acute leukemia and other types of cancer, including BRCA2-mutated tumors.
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Brefeldin A
Cayman ChemicalA natural fungal metabolite which reversibly interferes with protein trafficking and secretion mediated by the Golgi apparatus and endoplasmic reticulum; directly and reversibly inhibits Sec7 domain-containing GEFs which are necessary for Arf activation associated with vesicular transport (IC50 =…
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Amlodipine
Cayman ChemicalA dihydropyridine L-type calcium channel blocker that selectively inhibits calcium influx in cardiac and vascular smooth muscle; inhibits calcium-induced contractions in depolarized rat aorta (IC50 = 1.9 nM), displaying a slow rate of association and dissociation in isolated vascular and…
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Ketoprofen
Cayman ChemicalA non-selective NSAID exhibiting IC50 values of 0.5 and 2.33 µM for human recombinant COX-1 and COX-2, respectively.
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Valinomycin
Cayman ChemicalA cyclododecadepsipeptide potassium-selective ionophore antibotic; induces apoptosis in several cell tyes, including CHO cells, by stimulating potassium efflux.
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Pentylenetetrazole
Cayman ChemicalA central nervous system modulator that is used to experimentally induce seizures in animals; used extensively to screen for compounds that block the production of nonconvulsive (absence or myoclonic) seizures.
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Colcemid
Cayman ChemicalA colchicine derivative that inhibits tubulin polymerization (IC50 = 2.1 μM) with low toxicity; suppresses microtubule dynamicity, inhibits cell migration, blocks microtubule assembly, and arrests cells in metaphase; used to synchronize cells and for karyotyping in cytogenetic studies.
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Etoricoxib
Cayman ChemicalA dipyridinyl compound that demonstrates high in vitro and ex vivo selectivity for COX-2 over COX-1.
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Myriocin
Cayman ChemicalMyriocin is an amino fatty acid antibiotic derived from certain thermophylic fungi, in this case Mycelia sterilia. It is a potent immunosuppressant having 10- to 100-fold more activity than cyclosporin A. Myriocin is a potent inhibitor of serine palmitoyltransferase (Ki = 0.28 nM), the enzyme that…
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PP2
Cayman ChemicalA potent, reversible, ATP-competitive, and selective inhibitor of the Src family of protein tyrosine kinases: p56lck (IC50 = 4 nM), p59fynT (IC50 = 5 nM), Hck (IC50 = 5 nM).
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Melphalan
Cayman ChemicalA DNA alkylating agents that induces DNA interstrand and intrastrand crosslinks, cytotoxicity, and apoptosis; inhibits the growth of PC-3 prostate cancer cells with IC50 values of 0.074 or 0.77 μM for sequential dosing or single dosing, respectively.
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Brevetoxin B
Cayman ChemicalA neurotoxin that binds to voltage-gated sodium channels (IC50 = 15 nM) on neurons at the neuromuscular junction, causing the channel to open irreversibly at potentials more negative than normal, discharging action potentials repetitively; ichthyotoxic at nanomolar concentrations.
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Capsaicin (technical grade)
Cayman ChemicalCapsaicin is the primary active component of the heat and pain-eliciting lipid-soluble fraction of the Capsicum pepper. Capsaicin is present in natural hot pepper extracts along with a number of impurities, including dihydrocapsaicin and several lesser impurities. Separation by HPLC is required in…
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Indomethacin
Cayman ChemicalA non-selective COX inhibitor with IC50 values for ovine COX-1 and -2 of 0.1 and 6 µM, respectively; IC50 values for human recombinant COX-1 and -2 are 1.67 and 24.6 µM, respectively.
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Quercetin
Cayman ChemicalA flavonoid compound found in the bark and rinds of many plants and fruits.
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DPPH
Cayman ChemicalA cell-permeable, stable free radical that is commonly used to evaluate the ability of compounds to act as free radical scavengers or hydrogen donors and to measure the antioxidant activity of tissue extracts; followed by color change from purple (absorbance at 515-528 nm) to yellow.
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Mecamylamine (hydrochloride)
Cayman ChemicalA noncompetitive nicotinic acetylcholine receptor antagonist with preferential activity at the α3β4 subtype (IC50 = 90-640 nM) compared to α4β2, α3β2, and α7 subtypes (IC50s range from 1-7 μM).
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Diclofenac-d4
Cayman ChemicalIntended for use as an internal standard for the quantification of diclofenac by GC- or LC-MS.
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Chlorpromazine Hydrochloride
LKT LabsChlorpromazine is a phenothiazine that exhibits antipsychotic, antidepressant, anxiolytic, neuroprotective, and anticancer chemotherapeutic activities. Chlorpromazine inhibits D1/2/3/4 receptors, 5-HT1/2 receptors, a1/2-adrenergic receptors, and M1/2 muscarinic acetylcholine receptors (mAChRs).…
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GSK2193874
Cayman ChemicalA potent, selective antagonist of TRPV4 channels, blocking the influx of calcium induced by the TRPV4 agonist GSK634775 with IC50 values of 2, 5, and 40 nM for rat, mouse, and human isoforms, respectively; effective in vivo, as it resolves pulmonary edema resulting from myocardial…
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Salinomycin (sodium salt)
Cayman ChemicalAn antibacterial and coccidiostat compound that shows selective toxicity for HMLER breast cancer stem cells (IC50 = ~24 μM); 8 μM treatment of 4T1 and MCF-7-Ras breast cancer cell lines decreases cancer stem cell growth ~2-fold and ~3-fold, respectively; 5 mg/kg inhibits mammary…
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Prostaglandin E1
Cayman ChemicalPGE1 is the theoretical COX metabolite of DGLA, but it is virtually undetectable in the plasma of normal humans or other animals. Its pharmacology includes vasodilation, hypotension, and anti-platelet activities. The IC50 of PGE1 for the inhibition of ADP-induced human platelet…
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SB 225002
Cayman ChemicalA selective non-peptide inhibitor of CXCR2, inhibiting IL-8 binding to CXCR2 (IC50 = 22 nM).
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Abamectin
LKT LabsF0F1-ATPase and adenine nucleotide translocator inhibitor and GABA receptor antagonist. It prevents mitochondrial respiration and decreases sperm count and motility. Grade: ≥70%