A metabolite of dimetridazole, the nitroimidazole-based antibacterial and anticoccidial agent suspected to be carcinogenic and mutagenic to humans.

An intermediate in the catabolism of aromatic amino acids; formed in excess during alkaptonuria.

An intermediary prodrug of fluorouracil, the pyrimidine analog that inhibits thymidylate synthase selectively in tumor cells, interfering with DNA synthesis; one of two intermediary metabolites formed during metabolic conversion of the chemotherapeutic prodrug, capecitabine, to fluorouracil.

A broad-spectrum nitrofuran antibiotic used against urinary tract infections and as therapy for acute diarrhea of bacterial origin; inhibits the survival and migration of cancer cells, suppressing tumor growth and metastasis in vivo, at least in part by inhibiting STAT3 (IC₅₀ = 10 µM).

A racemic mixture of D- and L-phosphinothricin, used as the active ingredient in broad spectrum herbicides; also used, with the bar gene, which encodes phosphinothricin acetyltransferase, for selection during genetic engineering in plants.

A potent antagonist of the type III receptor tyrosine kinases PDGFRβ, FLT3, and c-Kit (IC₅₀ = 200, 220, and 170 nM, respectively); less potently inhibits CSF-1R (IC₅₀ = 3.4 µM) and does not significantly inhibit other tyrosine or serine/threonine kinases.

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.

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.

An orally active broad spectrum antifungal agent that blocks ergosterol biosynthesis by inhibiting the fungal CYP isoform CYP51; potently inhibits the mammalian analog CYP51A1 (IC₅₀ = 63.5 nM), as well as a variety of other CYP isoforms.

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.

A potent pan inhibitor of class I catalytic subunits of PI3K, inhibiting p110α, β, δ, and γ with IC50 values of 3, 33, 3, and 75 nM, respectively; inhibits the growth of certain types of cancer cells, and blocks signaling through PI3K to Akt, both in cells and in vivo.

A potent inhibitor of PDE5 (IC50 = 1-5 nM) that also blocks the activity of PDE11 (IC50 = 10-33 nM); IC50 values against other isoforms of PDE are in the micromolar range; pharmacokinetics are highlighted by its prolonged duration of effect.

The reduced form of the electron acceptor NADP+ and acts as an electron donor in various biological reactions.

An essential fatty acid and the most abundant ω-3 fatty acid in neural tissues, especially in the retina and brain; constitutes as much as 40% of the total PUFA pool in retinal and neuronal membranes; dietary supplementation via fish oil inhibits the progression of atherosclerosis and delays…

An analog of thalidomide that, at 10 μM, alters gene expression and cell viability in a range of cancer cell lines; induces proliferation and enhances the functional capacity of T-lymphocytes, amplifying co-stimulatory signaling pathways.

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.

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 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.

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).

A natural sesquiterpene that inhibits the proliferation of a wide range of tumors and enhances the effects of various chemotherapies; 10-40 µg/ml dose-dependently induces apoptosis and cell cycle arrest in the G2/M phase in HepG2 cells, upregulating Fas/FasL expression.

Pargyline is an irreversible inhibitor of monoamine oxidase (MAO) that is used clinically to treat moderate hypertension. At 10 mg/kg iv, pargyline induces a moderate decrease of systolic blood pressure in unanaesthetized hypertensive rats but not normotensive WKR or Sprague-Daley rats. The…

A major organic tracer generated by burned cellulose; used to evaluate, in atmospheric samples, the burning of wood.

A dietary flavonoid which has diverse physiological activities through both direct and indirect effects; directly binds ERα and ERβ, acting as an inverse agonist or agonist; acts as an antioxidant; suppresses signaling through certain receptor tyrosine kinases, including EGFR and HGF.

An organic polysulfide compound found in garlic that acts as an H2S donor; reduces the survival of prostate cancer PC-3 cells (IC50 = 22 μM) and inhibits the growth of human colon adenocarcinoma HCT15 cells (IC50 = 11.5 μM); suppresses the growth of PC-3 xenografts in vivo in mice and induces…

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…

A steroid hormone produced in the cortex of the adrenal glands that binds to both glucocorticoid and mineralocorticoid receptors; also is the precursor to aldosterone synthesis.

A potent inhibitor of iNOS (IC₅₀ = 0.20 μM), with over 1,000-fold selectivity compared to eNOS (IC₅₀ = 350 μM).

A succinimide that is converted to N-desmethylmethosuximide, a channel blocker that targets low threshold calcium currents; inhibits CYP2C19-mediated metabolism of biguanides; has anticonvulsant properties in clinical trials.

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

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 NO donor with a half-life of three hours at 37°C, pH 7.4; liberates two moles of NO per mole of parent compound.

POL is a common triglyceride component in seed and vegetable oils including olive, sesame, soybean, canola, corn, hazelnut, and many others. POL is one of the standard triglyceride components used for the USP analysis of sesame oil for pharmaceutical applications.