A membrane-permeant, fluorescent Na+ indicator dye; increasing concentration of Na+ increases the ratio of excitation efficiency at 330-345 nm to that at 370-390 nm with emission collected at 450-550 nm.

A cyclic hexapeptide mycotoxin that binds β-tubulin in a vinca domain; blocks microtubule growth, modulates the dynamics of microtubules, and interferes with mitosis.

Blocks CYP17A1 by potently inhibiting both the 17α-hydroxylase and the 17,20 lyase activities (IC₅₀ = 18 and 17 nM, respectively); essentially eliminates plasma testosterone while producing a 3- to 4-fold increase in plasma luteinizing hormone.

An analytical reference material categorized as a phytocannabinoid; a precursor in the biosynthesis of tetrahydrocannabinolic acid, cannabidiolic acid, and cannabichromenic acid; intended for research and forensic applications

Selectively inhibits human NHE-1 with an IC₅₀ value of 14 nM; reduces infarct size in a rabbit myocardial ischemia-reperfusion model without adversely affecting hemodynamics or cardiac function.

The product of nitration of linoleate by NO-derived reactive species; activates PPARγ (Ki = 133 nM), inducing CD36 expression in macrophages, adipocyte differentiation, and glucose uptake; can also be metabolized to produce nitrite derivatives which in turn form NO, leading to increased cGMP production.

A synthetic derivative of native coelenterazine that exhibits 16-fold higher luminescence intensity (emission maximum ~466 nm; half-total time of 0.6-1.2 sec) than native coelenterazine.

A small diffusible signaling molecule involved in quorum sensing in the model symbiont V. fischeri and the pathogens A. tumefaciens and P. aeruginosa.

A small molecule inhibitor of DNA ligase IV that prevents nonhomologous end-joining by interfering with the ligase binding and activating apoptosis; inhibits cancer cell growth in vitro (IC₅₀s = 8-120 µM) and in mouse models when co-administered with double-strand break-inducing…

A non-reducing inhibitor of 5-LO that shows selectivity for 5-LO over 12-LO or COX; inhibits topoisomerase II activity and arrests cell cycling or induces apoptosis in cancer cells.

A selective CaMKII inhibitor (IC₅₀ = 40 nM) that was designed based on the sequence around the autophosphorylation site (Thr286/Thr287) in the autoinhibitory domain of the protein kinase.

An F-series PG analog in which the C-1 carboxyl group has been modified to an N-diethyl amide; dialkyl amides such as a 17-p-PGF2α-NEt2 are inert to corneal amidase activity, and are not converted in any detectable amount to the corresponding free acids.

An inhibitor of S1P lyase; treatment of mice (50 µg/ml in drinking water) increases lymphoid tissue S1P concentrations 100-fold, reducing lymphocyte egress from thymus and peripheral lymphoid organs, resulting in reversible lymphopenia.

A certified reference material categorized as a phytocannabinoid; intended for research and forensic applications

An FGFR inhibitor.

A naturally occurring metabolite of bile acid that is produced by the conjugation of cholic acid and sulfate, predominantly in the liver and gut.

Largely acts a cell signaling intermediate; serving as substrate to produce IP5s, which can be further phosphorylated to produce Ins(1,2,3,4,5,6-)P6; also phosphorylated to produce phytic acid, which serves diverse roles in eukaryotic tissues; a poor activator of the Ins(1,4,5)-P3 receptor in vitro.

A mycotoxin that selectively inhibits RNA polymerase II (1 µg/ml), preventing translocation of the enzymes on DNA; used in molecular biology to distinguish among types of RNA polymerase in a sample and to arrest RNA synthesis in transcription studies.

An endogenous agonist for LXRα (EC₅₀ = 325 nM) that can induce the expression of the ABCA1 reverse cholesterol transporter to inhibit the overall absorption of cholesterol; used as a substrate to monitor cholesterol transport or as an endogenous positive control for testing LXR agonists.

A potent inhibitor of 15-PGDH (Ki = ~0.1 nM) that has activity in vivo; rapidly increases the levels of PGE2 in bone marrow and other tissues in mice after intraperitoneal injection.

A potent, selective inhibitor of ATR (IC₅₀ = 5 nM); inhibits the growth of LoVo colorectal adenocarcinoma cells in vitro and significantly reduces the growth of LoVo xenografts in mice.

A cell-permeable bis-indolo (indirubin) compound that acts as a highly potent, selective, reversible, and ATP-competitive inhibitor of GSK3α/β (IC₅₀ = 5 nM); inhibition of GSK activates the Wnt-signaling pathway and sustains pluripotency in human and mouse ESCs; maintains…

A specific inhibitor of N-linked glycoslylation that blocks the first step of glycoprotein synthesis and induces protein unfolding; impairs the function of several receptor tyrosine kinases, including EGFR, ErbB2, ErbB3, IGF-IR, and ALK; radiosensitizes glioma and pancreatic adenocarcinoma cells to…

Myriocin 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…

An inhibitor of non-structural protein 5A of hepatitis C virus; effectively reduces or eliminates certain genotypes of hepatitis C virus in vivo, particularly when used in combination with other agents.

A non-lipid agonist of LPA2 (EC₅₀ = 0.10 µM) that is without effect at other LPA receptor subtypes; protects IEC-6 cells against caspase activation and apoptosis following irradiation; increases the survival of mice suffering from hematopoietic acute radiation syndrome after…

A cell-permeable inhibitor that binds actin filaments, but not actin monomers, to inhibit polymerization at concentrations as low as 0.2 µM.

Misoprostol is a widely sold analog of PGE1 which has potent but relatively non-selective agonist activity with respect to the prostanoid EP receptor subgroup. Misoprostol has been used therapeutically for many years in humans for the treatment of gastric ulcer disease under the Searle tradename…

SC-560 is a member of the diaryl heterocycle class of COX inhibitors which includes celecoxib (Celebrex™) and rofecoxib (Vioxx™). However, unlike these selective COX-2 inhibitors, SC-560 is a selective inhibitor of COX-1. Using human recombinant enzymes, the IC₅₀ value for…

An agonist of TGR5 (EC₅₀ = 0.82 µM); stimulates the secretion of GLP-1 in mice when given orally (30 mg/kg) after a glucose challenge, particularly when given with a DPP4 inhibitor; increases energy expenditure and reduces hepatic steatosis and adiposity in mice subjected to…

PGA2 is a naturally occurring prostaglandin in gorgonian corals where it may function in self defense. It is generally not present in mammals. PGA2 has low biological potency in most bioassays, but it does show some antiviral/antitumor activity. At a 25 µM concentration, PGA2 blocks the cell…

A selective inhibitor of RNA polymerase I-driven transcription of rRNA (IC₅₀s = 142, 113, and 54 nM in HCT116, A375, and MIA PaCa-2 tumor cells, respectively); demonstrates in vivo antitumor activity against human solid tumors in mouse xenograft models.