N-2PIA is one of several aromatic amides of indomethacin reported to be potent and selective reversible inhibitors of COX-2. N-2PIA inhibits human recombinant and ovine COX-2 with IC₅₀ values of 0.06 and 0.125 µM, respectively. It is over 400 times less potent as an inhibitor of…

An antipsychotic compound that displays high affinity for dopamine receptors (Kis = 2.4, 0.2, and 1.8 nM for D2, D3, and D4, respectively); also has actions as an antagonist, inverse agonist, or channel blocker, with lower affinities, at other receptors and channels.

A natural anthocyanidin.

An ATP-competitive Chk1 inhibitor (Ki = 0.49 nM) that demonstrates 100-fold selectivity over Chk2; abrogates DNA damage-induced cell cycle arrest in tumor cell lines and xenografts, potentiating the antiproliferative effects of various chemotherapeutics.

ML-204 selectively blocks transient receptor potential canonical 4 (TRPC4) channels (IC₅₀s = 0.96 and 2.6 μM in fluorescent and electrophysiological assays, respectively). It exhibits 19-fold selectivity against TRPC6 and 9-fold selectivity against TRPC5 and does not affect TRPV1,…

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.

A selective inhibitor of SCFMET30 ubiquitin ligase, an E3 ligase that regulates transcription, cell-cycle control, and immune response; at 5 μM, upregulates a set of methionine biosynthesis genes by altering the SCFMET30 complex, preventing ubiquitination of target proteins, including Met4.

Piriprost is a structural analog of PGI2 with low IP receptor-mediated activity. Piriprost inhibits 5-LO with an IC₅₀ value around 100 µM, as measured by the release of 5-HETE from cultured myometrial cells. Piriprost inhibits the release of histamine and leukotrienes from isolated…

A potent TRPV1 antagonist that inhibits capsaicin-induced and acid-induced activation of rat TRPV1 with IC50 values of 35 and 6 nM, respectively.

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…

A brain-penetrant inhibitor of CSF1R, as well as c-Kit and FLT3 (IC₅₀s = 20, 10, and 160 nM in vitro, respectively); blocks macrophage recruitment in mammary tumor-bearing mice and blocks glioblastoma invasion in both cell culture and a mouse model of glioblastoma multiforme.

A broad-spectrum, indole-based antiviral compound that blocks viral fusion with target membranes, prohibiting viral entry into cells; effective against numerous viruses, including influenza A, B, and C and hepatitis B and C (IC₅₀s range from 3-12.5 µg/ml).

A selective NMDA receptor antagonist (Kd = 1.4 μM) that competitively inhibits the glutamate binding site of NMDA receptors; widely used to study the activity of NMDA receptors particularly in regard to researching synaptic plasticity, learning, and memory.

A broad spectrum antibiotic that is in the β-lactam subclass known as carbapenems; effective against many Gram-negative and Gram-positive bacteria and is more effective against P. aeruginosa than other carbapenems; not effective against MSRA.

A small molecule that stimulates the expression of PGC-1α and downstream genes in skeletal muscle cells, improving glucose utilization and fatty acid oxidation at a concentration of 20 μM; 15 mg/kg/day administered to diabetic db/db mice improved glucose tolerance, pyruvate tolerance, and…

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 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…

An ATP-competitive inhibitor of JAK1 and JAK2 (IC₅₀s = 11 and 18 nM, respectively); causes growth suppression and apoptosis in JAK2-dependent hematopoietic cell lines; is efficacious in a mouse model of JAK2V617F-dependent myeloproliferative neoplasms.

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.

A monobactam antibiotic that is effective against Gram-negative bacteria but inactive against Gram-positive bacteria.

A naturally-occurring isoflavone with anti-oxidant, anti-carcinogenic, and anti-atherosclerotic activities; directly inhibits mitochondrial aldehyde dehydrogenase 2 (IC₅₀ = 80 nM) and is an effective anti-dipsotropic isoflavone.

An intermediate in the biosynthesis of NAD+ that has been used to enhance NAD biosynthesis and glucose-stimulated insulin secretion in Nampt+/- mice and high-fat diet-induced type 2 diabetes mice.

Thioester analogs of glycerophospholipids, in combination with Ellman’s reagent, are convenient colorimetric substrates for the measurement of phospholipase activity. HEPC is a truncated analog of phosphatidylcholine with the entire sn-1 substituent deleted, and with a hexadecylthioester in…

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 inhibitor of HMG-CoA reductase (IC50 = 5 nM) that has been shown to be more effective than atorvastatin, simvastatin, or pravastatin in decreasing LDL cholesterol and increasing HDL cholesterol.

Unoprostone isopropyl ester (Rescula) is the clinically approved, prodrug form of unoprostone, which is a free acid analog of PGF2α. Both latanoprost and Rescula have been approved for the treatment of ocular hypertension. Both analogs of PGF2α are believed to act by increasing the rate…

A prodrug that is rapidly catabolized in vivo to 5-fluorouracil when administered by rapid injection; inhibits thymidylate synthase (EC₅₀ = 0.6 nM), interfering with DNA synthesis; used to treat various cancers, particularly metastases to the liver.

A pyridine regio-isomer of GSK-J1 which poorly inhibits JMJD3 (IC50 > 100 μM), making it an appropriate negative control for in vitro studies involving GSK-J1.

A fluorescent substrate for calpain and papain (excitation max: 360 nm; emission max: 460 nm) that is used for measuring the chymotrypsin-like peptidase activity of the 20S proteasome.

A dipyridinyl compound that demonstrates high in vitro and ex vivo selectivity for COX-2 over COX-1.

An inhibitor of Ras-mediated signaling that inhibits the growth of PANC-1 and U87 tumor cells with IC₅₀ values of 20 and 10 µM, respectively.

A β-adrenergic receptor agonist with potent positive inotropic effects in vivo; strongest effects on β1 receptors, with lesser but significant β2 receptor activation and only weak α1 receptor actions; strongly increases cardiac contractility.