A selective small molecule activator of SIRT1 that is 1,000-fold more potent than resveratrol; improves insulin sensitivity, lowers plasma, glucose and increases mitochondrial capacity in diet-induced obese and diabetic leptin-deficient ob/ob mice after one week of treatment with an oral dose of…

A HSL compound produced in the marine bioluminescence bacterium V. fischeri.

A competitive antagonist of muscarinic receptors that potently blocks signaling through M1, M2, and M3 (Kis = 25, 125, and 10 nM, respectively), resulting in muscle relaxation.

An irreversible antitumor agent that induces non-apoptotic cell death selectively in tumor cells expressing the small T oncoprotein and oncogenic Ras (IC₅₀s = 1.25-5 µg/ml).

A naturally occurring macrolide polyene used to treat fungal infections, including Candida, Aspergillus, Cephalosporium, Fusarium and Penicillium (minimal inhibitory concentrations ~ 4-64 μM); also used in the food industry as a "natural" preservative.

A natural isoflavone which is biotransformed by intestinal bacteria to give the phytoestrogens daidzein and equol, resulting in antithrombotic, antiallergic, and other salutary effects; modulates serotonin receptors when given intraperitoneally; suppresses LPS-mediated activation of NF-κB in…

A receptor antagonist acting at the muscarinic receptors (Ki = 5.5, 47, 0.84, 8.6, and 2.3 nM for M1 through M5, respectively); effective in treating problems related to the lower urinary tract.

An analog of suramin that selectively inhibits P2X1 receptors (pIC50 = 6.3); selectively antagonizes the Gsα-subunit G protein, which suppresses the association rate of GTPγS binding to Gsα-s, inhibits the stimulation of adenylyl cyclase activity, and blocks G protein coupling to…

An 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…

A quinone which inhibits topoisomerase I at 25 μM and transglutaminase (IC₅₀ = 5 μM); reduced to β-lapachone hydroquinone by NQO1, generating ROS during its reversion to β-lapachone; sensitizes cancer cells to radiation, suppresses NF-κB activation, and drives apoptosis.

A selective inhibitor of human collagenase-3, also known as MMP-13, producing 89% inhibition at 10 µg/ml; used to evaluate the role of MMP-13 in diverse processes.

A threonine and glycine catabolite that can be converted to methylglyoxal by amine oxidases; at 0.10-5 mM acts as a pro-oxidant inducing cell death in RINm5f pancreatic β-cells; used as a growth substrate for Pseudomonas.

Molecular Formula: C₅₇H₉₂O₆ Formula Weight: 873.4

An irreversible inhibitor of the H2S synthesizing enzyme cystathionine-γ-lyase (CSE) (IC50 value of 55 µM).

An activator of PLC that stimulates superoxide generation, increase in cytoplasmic calcium, and inositol phosphate formation in human neutrophils when used at a concentration of 15-50 µM; promotes the hydrolysis of phosphatidylinositol bisphosphate by all PLC isoforms.

An NMDA open-channel blocker (Ki = 1.2 μM at -60 mV) and uncompetitive antagonist with known anti-Parkinsonian, anti-epileptic, anti-stroke, and anti-Alzheimer’s disease properties; 12 μM blocks 90% of NMDA receptor activity and prevents NMDA-receptor mediated neurotoxicity in rat…

A selective, ATP-competitive inhibitor of the serine/threonine kinase, glycogen synthase kinase 3β (Ki = 38 nM; IC₅₀ = 104 nM); demonstrates neuroprotective effects by inhibiting tau phosphorylation (IC₅₀ = 2.7 μM) at a GSK3-specific site (Ser396) in cells stably…

A semisynthetic analog of taxol that inhibits microtubule disassembly (IC50 = 0.2 μM) and inhibits cell replication (IC50 = 0.13 μM); has applications in breast cancer and hormone-refractory prostate cancer; intended for research applications.

A lipophilic activator of PKA and PKG (Ka = 0.05 and 0.11 μM, respectively); inhibits PDE VA, PDE III, and PDE IV with IC50 values of 0.9, 24, and 25 μM, respectively.

A conjugate of biotin and lysine used for derivatization or conjugation to proteins and other molecules with a medium-chain length spacer; also used as an anterograde, retrograde, or intracellular neuroanatomical tracer that is fixable with aldehyde-based fixatives.

A thiazide-like diuretic that targets the Na+-Cl- cotransporter responsible for salt reabsorption in the distal convoluted tubule of the kidney (IC₅₀ = 0.3 µM in rat); inhibits human carbonic anhydrase isoforms VII, XII, and XIII (Kis = 2.1, 5.4, and 15 nM, respectively).

DAN-1 EE is a fluorescent indicator for the bioimaging of NO. DAN-1 EE is a cell permeable derivative of DAN, a molecule which has been used extensively in the quantitation of nitrate and nitrite using fluorescence spectroscopy. Upon entry into the cell, DAN-1 EE is transformed into the less cell…

A “hybrid” analog which incorporates components of both the AEA-like and dopaminergic neurotransmitter pathways; is nearly inactive as a TRPV1 ligand and fails to elicit hyperalgesic or nocifensive responses in vivo; exhibits an “entourage” effect at concentrations of 0.1-10…

A nuclesoside analog that disrupts DNA synthesis in blood cells; effective in a number of animal tumor systems including LI210 leukemia, CD8F mammary adenocarcinoma, P388 leukemia, and human LX-1 lung tumor xenograft and displays anticancer activity against human hematological malignancies in vivo.

A selective inhibitor of PFKFB3 (IC₅₀ = 207 nM); rapidly induces apoptosis in transformed cells, suppresses glucose uptake and growth of Lewis lung carcinomas in syngeneic mice, and yields antitumor effects in human xenograft models of cancer in athymic mice.

An inhibitor of γ-secretase, blocking the production of total Aβ in human primary neuronal cultures with an IC₅₀ value of 115 nM and Aβ42 with an IC₅₀ value of 200 nM; reduces brain levels of Aβ in vivo when given orally; indirectly inhibits Notch,…

An amino acid derivative and an intermediate, by-product, or modulator of several metabolic pathways, including the activated methyl cycle and cysteine biosynthesis; also a product of SAM-dependent methylation of biological molecules, including DNA, RNA, and histones, and other proteins.

A potent inhibitor of PDE5 (IC50 = 1-5 nM) that also blocks the activity of PDE11 (IC50 = 10-33 nM); IC50 values against other isoforms of PDE are in the micromolar range; pharmacokinetics are highlighted by its prolonged duration of effect.

An imidazobenzodiazepine derivative that competitively inhibits benzodiazepine binding to GABAA receptors (IC₅₀ = 2 nM); used to reverse sedation induced by benzodiazepine drugs and is effective in the treatment of benzodiazepine overdose or withdrawal.

An adamantine derivative that selectively blocks Ca2+-permeable glutamate receptor channels (IC₅₀ = 10 μM - 0.1 mM).

POL is a common triglyceride component in seed and vegetable oils including olive, sesame, soybean, canola, corn, hazelnut, and many others. POL is one of the standard triglyceride components used for the USP analysis of sesame oil for pharmaceutical applications.

A cytotoxic, quinoline alkaloid that inhibits the DNA enzyme topoisomerase I (Top I) by binding the Top1-DNA cleavage complex and inducing DNA-strand breaks; has strong anti-tumor activity and induces DNA damage at concentrations as low as 51 nM in whole cells and 12 nM in isolated nuclei in in…