An isomer of 17-phenyl trinor PGF2α, characterized by an inverted (β) hydroxyl group at C-15.

A potent inhibitor of the TGF-β receptor 1 (TGF-β R1, ALK5) kinase (IC₅₀ = 14.36 nM); blocks TGF-β1-induced phosphorylation and nuclear translocation of SMAD2/3 as well as TGF-β1-directed gene expression; effective in vivo, preventing the development of fibrosis in animals.

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.

IDO-IN-1 is a potent indoleamine 2,3-dioxygenase (IDO) inhibitor that demonstrates IC₅₀ values of 59 and 12 nM for human IDO enzymatic activity and HeLa cell assays, respectively. It is inactive against tryptophan 2,3-dioxygenase (TOD; IC₅₀ > 10 µM).

A second generation analog of amiloride that inhibits TRPP3-mediated Ca2+-activated (IC₅₀ = 0.14 μM) and ENaC (IC₅₀ = 10 nM); inhibits active sodium transport of human and ovine bronchial epithelial cells (IC₅₀s = 75 and 116 nM, respectively).

A cell-permeable inhibitor of JMJD2E (KDM4DL; IC₅₀ = 920 nM); reduces the expression of immediate early genes of HSV (IC₅₀ = ~10 µM) and hCMV, blocks viral infection, and suppresses the level of viral reactivation in a ganglia explant model of latently infected mice.

Butaprost is a structural analog of PGE2 with good selectivity for the EP2 receptor subtype. Butaprost has frequently been used to pharmacologically define the EP receptor expression profile of various human and animal tissues and cells. Serious confusion as to the structure of Butaprost was…

A natural chalcone that has anti-inflammatory actions, supporting its use as a skin lightening agent, particularly for rosacea and atopic dermatitis; induces apoptosis and suppresses migration and invasion of cancer cells in vitro; has antibacterial and anti-parasitic actions.

A selective inhibitor of PI3Kα that is equipotent against both wild type and several mutant isoforms (IC₅₀s = 4.0-4.8 nM); dose-dependently inhibits the growth of PI3Kα-dependent xenograft tumors in mice, alone or in combination with other kinase inhibitors.

A corticosteroid prodrug that is converted to its active form, des-CIC, a glucocorticoid receptor agonist (Ki = 0.31 nM); used to ameliorate symptoms of airway inflammatory diseases.

Oleyloxyethyl phosphorylcholine is an inhibitor of PLA2 with an IC₅₀ value of 6.2 µM for porcine pancreatic PLA2.

A less potent IWP-2 derivative that has been used to determine which structural features of IWP-2 are essential for impairing Wnt/ β-catenin pathway activity.

Endogenous ligand of the APJ receptor, with an EC50 of 0.37 nM; acts primarily in the periphery and CNS, playing important roles in regulating cardiovascular function, fluid homeostasis, hypertension, and insulin sensitivity.

An inhibitor of p53-Mdm2 interaction (IC50 = 0.09 µM); induces the expression of p53-regulated genes and exhibits potent antiproliferative activity in cells with functional p53.

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.

Selective inhibitor of aldo-keto reductase 1C1 (AKR1C1; Ki = 4 nM) versus AKR1C2, AKR1C3, and AKR1C4 (Ki = 0.087, 4.2, and 18.2 μM, respectively); potently inhibits the metabolism of progesterone in endothelial cells overexpressing AKR1C1 (IC₅₀ = 460 nM).

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…

DuP-697 is a member of the diaryl heterocycle group of selective COX-2 inhibitors which includes MK-966 (rofecoxib), SC-58125, and celecoxib. DuP-697 is a potent and time-dependent inhibitor of COX-2. When tested on isolated recombinant enzymes, DuP-697 is at least 50 times more potent in the…

A benzimidazole analog that inhibits IKK-ε with an IC50 value of ~15.8 µM.

A potent disruptor of microtubules used as a chemotherapeutic compound; inhibits growth of cervical (HeLa), lung (A549), breast (MCF-7), colon (HT-29), ovarian (OVG-1), and pancreatic (PC-Sh) carcinomas with IC50 values ranging from 2.5-7.5 nM; induces mitotic arrest and initiates apoptosis of…

AFC is a synthetic substrate for the isoprenylated protein methyltransferase (also known as S-adenosylmethionine-dependent methyltransferase). Because it is able to serve as a substrate for the methyltransferase, it effectively functions as an inhibitor of methylation of endogenous isoprenylated proteins.

A potent lipid signaling molecule that exhibits a wide range of biological activities; it enhances cell growth and inhibits the normal apoptotic response to a variety of stimuli.

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…

K252c is a cell-permeable PKC inhibitor (IC₅₀s = 2.45 and 25.7 µM for PKC and PKA, respectively). It induces apoptosis in human chronic myelogenous leukemia cancer cells. In human foreskin fibroblast cells, it reduces focus formation induced by human cytomegalovirus (HCMV) strains…

A potent, stable, and selective agonist analog of AEA with a Ki value of 2.2 nM at the isolated rat CB1 receptor; 325 times more potent at the CB1 receptor compared with the CB2 receptor; induces hypothermia in mice with the same efficacy as AEA, in spite of its much higher affinity for the CB1…

A cell-permeable inhibitor of SIRT1 (IC₅₀ = 56 µM) and SIRT2 (IC₅₀ = 59 µM); less effectively inhibits SIRT5 (IC₅₀ >300 µM) and has no effect on class I and II HDACs; sensitizes H460 lung cancer cells to etoposide and paclitaxel; blocks a…

A potent, selective, and orally bioavailable inhibitor of PRMT5 (Ki = 5 nM); blocks the growth of mantle cell lymphoma Z-138 xenografts, without significant body weight loss, in mice.

A cell-permeable inhibitor of SCF-mediated c-kit activation, completely blocking phosphorylation of c-kit in human melanoma cells at a concentration between 1 and 5 µM; prevents SCF-mediated downstream phosphorylation of p44/p42 ERK.

A lincosamide antibiotic effective against Gram-positive bacteria that acts by inhibiting bacterial protein synthesis via binding to the 50S subunit of the ribosome.

A natural yellow carotenoid, which can be found in plants, egg yolks, and in the human retina; a lipid-soluble antioxidant that can circulate in the plasma and confer cardioprotective, anti-inflammatory, and anti-angiogenic effects.

An anthracycline antitumor antibiotic agent that inhibits DNA topoisomerase II by inducing double-stranded DNA breaks; inhibits nucleic acid synthesis and induces apoptosis by intercalating within DNA.

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…