A 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 =…

A potent inhibitor of several NHE isoforms, inhibiting NHE1, NHE2, NHE3, and NHE5 with Ki values of 0.02, 0.5, 2.4, and 0.42 μM, respectively; less effectively inhibits NHE4 (IC₅₀ ≥10 μM).

An aminonucleoside antibiotic that blocks protein synthesis in both prokaryotes and eukaryotes by causing premature termination of nascent polypeptide chains; used in assays for peptide-bond formation and elongation and also often used as selective agent in cell culture systems.

A non-protein amino acid that chelates iron and copper; inhibits certain enzymes that contain iron or copper, including arginase (IC₅₀ = 3.7 µM).

An inhibitor of SRE activation in PC3 cells (IC₅₀ = 6.4 μM), with 87% inhibition of SRE activation achieved at 100 μM; inhibits PC3 cell migration (IC₅₀ = 4.2 μM), as determined by a scratch wound assay; causes no cytotoxicity when evaluated by WST-1 assay.

An unsaturated fatty acid found in royal jelly produced from honeybees; demonstrates longevity-promoting effects in C. elegans, down regulates matrix metalloproteinases (MMPs) in rheumatoid arthritis, inhibits VEGF-induced angiogenesis in HUVECs, facilitates differentiation of neurons from neural…

A selective inhibitor of 15-hydroxy PGDH (IC₅₀ = ~10 µM).

Hexanolamino PAF C-16 is a PAF analog with mixed PAF receptor agonist/antagonist properties. In human monocyte-derived macrophages, it is an antagonist which inhibits the production of reactive oxygen species in response to PAF C-16. On the other hand, in rabbit platelets and guinea pig…

A potent inhibitor of neprilysin, a membrane metallo-endopeptidase that cleaves peptide hormones, such as enkephalins, glucagon, and bradykinin (Ki = 4-140 nM); produced in vivo via the metabolism of the prodrug acetorphan.

An inhibitor of PLC-dependent processes by an undefined mechanism; inhibits platelet aggregation induced by collagen or thrombin with IC₅₀ values of 0.6 and 5 µM, respectively.

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 serotonin reuptake inhibitor (Ki = 6.2 nM in rat hypothalamus) with comparatively little effect on noradrenaline reuptake (Ki = 1,100 nM); potentiates the pharmacological effects of serotonin and its precursor, 5-hydroxy tryptophan, in the CNS resulting in antidepressant effects.

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.

A specific and potent inhibitor of MPC carrier activity; potently inhibits pyruvate-dependent oxygen consumption by rat heart mitochondria (IC₅₀ = 50 nM).

A neuroexcitatory amino acid that functions as a NMDA and metabotropic glutamate receptor agonist; used to induce brain lesions in animal models of cognitive dysfunction.

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 potent, cell-permeable, ATP-competitive inhibitor of PI3K family members (IC50 = 2, 8, 20, 26 nM for DNA-PK, p110α, mTORC1, and PI3-KC2β, respectively).

A nitrogen mustard β-chloro-nitrosourea compound used as an alkylating agent to form interstrand crosslinks in DNA, which leads to cancer cell cytotoxity and apoptosis; also reported to inhibit glutathione reductase, thioredoxin reductase, and lipoamide dehydrogenase.

A dipeptide boronic acid derivative that reversibly inhibits the 20S proteasome (Ki = 0.6 nM); drives cell cycle arrest and apoptosis in cancer cell lines and has applications in multiple myeloma and certain lymphomas, as well as other types of cancer.

A selective inhibitor of the Src family of non-receptor tyrosine kinases (IC₅₀s = 2 and 6 nM for Lck and Src, respectively); used in combination with PD 0325901, CHIR99021, and SB-590885 to support self-renewal of naïve human embryonic stem cells.

A metabolite of vinclozolin, a dicarboximide fungicide, that acts as an effective antagonist of the androgen receptor (Ki = 9.7 µM in rat).

A major oxysterol formed from cholesterol by CYP3A4/5; used as a marker for CYP3A4/5 activity.

A selective allosteric inhibitor of Bcr-Abl (IC₅₀s = 4.52, 0.38, and 0.93 µM against Bcr-Abl mutants G250E, E255V, and M351T, respectively); displays additive inhibitory activity against T315I Bcr-Abl mutants both in in vitro assays and in a recalcitrant T315I Bcr-Abl mutant mouse…

Reversibly inhibits dihyroorotate dehydrogenase, the rate-limiting step in the de novo synthesis of pyrimidines, preventing DNA synthesis of activated lymphocytes (IC₅₀s = 0.09, 3.5, and 12.5 μM for rat, mouse, and human, respectively); also inhibits tyrosine kinases responsible for…

An orally active inhibitor of PI3Kg that suppresses joint inflammation in mouse models of rheumatoid arthritis; inhibits human recombinant PI3Kg, a, b, and d in an ATP-competitive manner with IC50 values of 8, 60, 270, and 300 nM, respectively.

2-O-ethyl PAF C-16 is a synthetic PAF analog which contains an ethyl group, attached by an ether linkage, at the sn-2 position. It is a less potent agonist than methylcarbamyl PAF C-16 in the induction of platelet aggregation in both human and rabbit PRP. 2-O-ethyl PAF C-16 causes aggregation of…

An agonist for mCAR (EC₅₀ = 20 nM) that is effective for the mouse receptor but not for human or rat CAR receptors; potently induces cytochrome P450 monooxygenases and multidrug resistance and xenobiotic efflux proteins.

A potent and selective inhibitor of reticulocyte 15-LO-1.

A panaxadiol that has diverse in vitro and in vivo effects, including anti-cancer, neuroprotective, anti-hypertensive, and anti-inflammatory actions; induces apoptosis and inhibits angiogenesis in a variety of cancer models.

A cell permeable drug that inhibits cholesterol trafficking from late endosomes/lysosomes to the ER, but not to the plasma membrane.

A GABAA receptor agonist whose potency varies depending on the receptor subunit composition (partial agonist at α1β2γ2 (ED50 = 143 µM), full agonist at α5 (ED50 = 28-129 µM), and super agonist at α4β3δ (ED50 = 6 µM)); acts as an antagonist…

A reversible inhibitor of cysteine, serine, and threonine proteases; inhibits cathepsin B (Ki = 6 nM), calpain (Ki = 10 nM), trypsin (Ki = 35 nM), plasmin (Ki = 3.4 μM), and kallikrein (Ki = 19 μM), and has no effect against chymotrypsin, elastase, renin, or pepsin.