Palmitic acid ethyl ester is a neutral, lipid-soluble form of the free acid. It is one of the fatty acid ethyl esters that increase cytosolic Ca2+ concentration leading to pancreatic acinar cell injury due to excessive consumption of ethanol.

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.

A fluorescent probe which is commonly used to stain DNA and chromosomes for fluorescent microscopy and flow cytometry applications; characterized by ultraviolet (max 358 nm) excitation and blue (max 461 nm) emission wavelengths.

A metabolically stable adenosine analog that binds to adenosine A1, A2A, and A3 receptors with Ki values of 300, 80, and 1,900 nM, respectively; anticonvulsive activity in a rat model of generalized seizures.

A selective inhibitor of PDE4 (IC₅₀ = 72 nM) that antagonizes the Hedgehog signaling pathway; activates localized PKA signaling, which, in turn, regulates Gli processing and translocation.

A synthetic analog of PGF2β.

An agonist of α2 adrenergic receptors (Ki = 194 nM); used for sedation, anesthesia, and analgesia in non-human mammals.

A nonpeptide angiotensin II receptor antagonist which selectively and insurmountably inhibits the angiotensin II AT1 receptor subtype (IC₅₀ = 2.7 nM); does not alter PPARγ activity.

Phytochemical from cruciferous vegetables that demonstrates anticancer and chemopreventative effects (10-30 µM) involving the induction of Phase 2 enzymes, promotion of apoptosis, induction of cell cycle arrest, inhibition of cell proliferation, and inhibition of histone deacetylases and DNA…

A bioactive sterol that can affect cholesterol homeostasis, membrane properties and cell survival; inhibits CYP7A1 with an IC₅₀ = ~ 1 µM; can be used as a standard in the determination of cholesterol derivatives by GC-MS or HPLC.

A cell-permeable, water-soluble derivative of vitamin E with potent antioxidant properties; commonly used as a standard or positive control in antioxidant assays.

11-keto-β-Boswellic acid is a naturally occurring pentacyclic triterpene isolated from the gum resin exudate from the stem of the tree B. serrata (frankincense). Boswellic acids are specific, non-redox inhibitors of leukotriene synthesis via 5-lipoxygenase that demonstrate anti-inflammatory…

A methylsulfanylimidazole that inhibits p38 MAP kinase (IC₅₀ = 0.90 µM in vitro); potently blocks the release of TNF-α and IL-1β from human peripheral blood mononuclear cells (IC₅₀s = 0.37 and 0.044 µM, respectively).

An activator of the ATP-sensitive K+ channels that displays anti-ischemic (EC25 = 8.9 μM) and cardioprotective (IC₅₀ = 0.03 μM) effects in rat hearts.

A cyanobacterial toxin that targets protein and glutathione synthesis in hepatocytes (IC50s = 1.3 and 2.4 µM, respectively), inhibits uridine monophosphate synthase complex activity (Ki = 10 µM), and induces DNA damage.

A cell-permeable compound that maintains long-term mouse ESC pluripotency; allows ESCs to form embryoid bodies that continue to express markers of pluripotency when used at 4 µg/ml with Wnt3a; blocks the interaction of Nkd with a subunit of PP2A.

An NSAID that non-selectively and reversibly inhibits both COX isoforms (IC₅₀ = 1.57 and 1.69 μM for COX-1 and COX-2, respectively).

NAM is a potent, irreversible inhibitor of MAGL or MAGL-like activity in rat cerebellar membranes, exhibiting an IC50 value of 140 nM. Inhibition of MAGL by the sulfhydryl-reactive maleimide group of NAM suggests a critical cysteine residue is present in the substrate-binding site of the enzyme.

A mycotoxin produced by A. ochraceus, A. carbonarius, and P. verrucosum that is commonly found as a food contaminant (Tolerable Weekly Intake = 100 ng/kg body weight per day); triggers nephropathy, induces renal adenomas, and initiates skin tumors through events involving oxidative stress,…

13,14-dihydro-19(R)-hydroxy PGE1 is the theoretical metabolite of 13,14-dihydro PGE1 by ω-1 hydroxylase. There are no known reports on its biosynthesis or biological activity.

A trichothecene mycotoxin that can infect grain crops causing alimentary toxic aleukia in humans and animals; inhibits protein synthesis, disrupts membrane phospholipid metabolism, increases lipid peroxides in the liver, and is highly cytotoxic to macrophages (IC50 = 19.47 nM), altering the…

A colorimetric substrate whose amino acids YVAD have been shown to be a preferred cleavage site for caspase-1 and -4.

Guaiacol is a phenolic natural product first isolated from Guaiac resin and the oxidation of lignin. Guaiacol is readily oxidized by the heme iron of peroxidases including the peroxidase of COX enzymes. It can therefore serve as a reducing co-substrate for COX reactions. The one-electron oxidation…

Catechin is a polyphenolic flavonoid which has been isolated from a variety of natural sources including tea leaves, grape seeds, and the wood and bark of trees such as acacia and mahogany. Catechin is a more potent antioxidant than ascorbate or α-tocopherol in certain in vitro lipid…

A broad-spectrum benzimidazole anthelmintic that is active against gastrointestinal parasites (IC₅₀ = 0.30 µM against Giardia in vitro) by targeting tubulin; activates HIF-1α, abrogating oxidative stress-induced death in primary neurons in vitro.

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

AD140 is an orally bioavailable, nonsteroidal selective androgen receptor modulator (SARM) that binds to the androgen receptor with a Ki value of 7 nM. At 0.03-0.3 mg/kg, it has been shown to stimulate muscle weight increase without affecting prostate or seminal vesicle in castrated male rats. At…

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

An insect hormone used as an inducer of ecdysone-inducible mammalian expression systems.

An irreversible, noncompetitive inhibitor of PARP1 that disrupts binding between PARP1 and DNA by interacting with the DNA binding domain; produces rapid apoptosis in the various cancer cell (IC50s = 40-128 μM).

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 selective adenosine A3 receptor antagonist (Kis = 18.9 and 113 nM for human and rat A3 receptors, respectively, versus Kis = 15.6 and 2.05 µM for rat A1 and A2A receptors, respectively).