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

A selective small molecule activator of SIRT1 that is 1,000-fold more potent than resveratrol; improves insulin sensitivity, lowers plasma, glucose and increases mitochondrial capacity in diet-induced obese and diabetic leptin-deficient ob/ob mice after one week of treatment with an oral dose of…

A HSL compound produced in the marine bioluminescence bacterium V. fischeri.

A non-selective, irreversible COX inhibitor with IC₅₀ values of 0.75 and 1.25 mM for ovine COX-1 and COX-2, respectively.

A microbial metabolite that binds the TCR on Vγ9Vδ2 peripheral blood lymphocytes with high affinity (EC50 = 0.39 nM); induces the expansion of human memory Vγ9Vδ2 T cells.

Carbaprostacyclin is a stable analog of PGI2. When infused in rabbits or dogs, it inhibits ex vivo platelet aggregation, but the effect persists only 10 minutes after termination of the infusion. This implies rapid metabolic inactivation of carbaprostacyclin. Carbaprostacyclin inhibits platelet…

A potent and selective inhibitor of PLD1, both in vitro (IC₅₀ = 46 nM) and in cells (IC₅₀ = 11 nM); also effective as a PLD2 inhibitor at higher concentrations (IC₅₀ = 933 nM in vitro; 1,800 nM in cells); strongly inhibits the invasive migration of several breast…

An enantiomer of C75, which in racemic form is a stable FAS inhibitor that when administered leads to profound weight loss and feeding inhibition in both high-fat diet wild type obese and leptin-deficient ob/ob mice.

A synthetic analog of natural PtdIns featuring C8:0 fatty acids at the sn-1 and sn-2 positions; contains the same inositol and DAG stereochemistry as the natural compound.

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 competitive HDAC inhibitor that inhibits HDAC1 (IC50 = 0.25 μM) and HDAC3 (IC50 = 0.30 μM); causes cell differentiation, cell cycle arrest, or apoptosis.

A synthetic glucocorticoid that binds the human glucocorticoid receptor with a higher affinity than a natural ligand, cortisol (Kd = 5 vs. 17 nM, respectively); has anti-inflammatory effects.

A competitive inhibitor of CBX7 chromodomain binding to H3K27me3 (Ki = 43 µM); derepresses transcription of the polycomb repressive complex target gene p16/CDKN2A in prostate cancer cells at 250 µM.

Formal Name: 3,4-dichloro-N-(1-methylbutyl)-benzamide CAS Number: 7497-07-6 Molecular Formula: C₁₂H₁₅Cl₂NO

A competitive antagonist of muscarinic receptors that potently blocks signaling through M1, M2, and M3 (Kis = 25, 125, and 10 nM, respectively), resulting in muscle relaxation.

An active metabolite of propranolol, inhibiting β1- and β2-adrenergic receptors with KD values of 2.4 and 5.8 nM, respectively; comparable to propranolol in potency in antagonizing the effects of isoprenaline on heart rate and blood pressure in cats and dogs.

An irreversible antitumor agent that induces non-apoptotic cell death selectively in tumor cells expressing the small T oncoprotein and oncogenic Ras (IC₅₀s = 1.25-5 µg/ml).

A naturally occurring macrolide polyene used to treat fungal infections, including Candida, Aspergillus, Cephalosporium, Fusarium and Penicillium (minimal inhibitory concentrations ~ 4-64 μM); also used in the food industry as a "natural" preservative.

Biotin is a water-soluble B vitamin (vitamin B7) that may be found in many foods but is also administered as a dietary supplement. Biotin is a coenzyme involved in the synthesis of fatty acids, isoleucine, and valine; it also plays a role in gluconeogenesis. Biotin may be found attached to lysine…

An allosteric, reversible inhibitor of PAR1 on platelets, preventing surface expression of P-selectin induced by the peptide SFLLRN with an IC₅₀ value of 0.26 µM; also blocks platelet activation induced by thrombin but not by PMA, U-46619, or collagen.

An inhibitor of ALK5, ALK4, and ALK7 (IC₅₀s = 12, 45, and 7.5 nM, respectively); blocks the phosphorylation of Smad2/3 and inhibits TGF-β-induced epithelial-to-mesenchymal transition; used to reprogram fibroblasts into alternative lineages.

Aminopterin is a folic acid analog and derivative of pterin; it is very similar to methotrexate in structure. Aminopterin exhibits anticancer chemotherapeutic and immunosuppressive activities. Like other folic acid analogs, aminopterin inhibits dihydrofolate reductase, depleting nucleotide pools…

A citrus-derived flavonoid that inhibits CYP3A4 activity in human liver microsomes (IC₅₀s = 139-188 μM); demonstrates antifibrotic, lipid lowering, and insulin-like properties.

A redox indicator used to detect cellular respiration; primarily reduced by Complex I in mitochondria and, under anaerobic conditions, is completely reduced to an insoluble red 1,3,5-triphenylformazan.

A cell-permeable derivative of 2-HG.

An AM ester of the red fluorescent calcium indicator rhod-2; accumulates within mitochondria.

RD162 is a second-generation androgen receptor (AR) antagonist. It inhibits binding of 18 F-FDHT to AR in human prostate cancer cells with an IC₅₀ value of 30.9 nM. RD162 completely suppresses VCaP cell proliferation at 1 µM and induces apoptosis of VCaP cells at 10 µM.…

A broad spectrum, orally available kinase inhibitor that targets primarily tyrosine kinases, including VEGFR and EGFR, with IC₅₀ values in the nanomolar range; also potently blocks non-receptor tyrosine kinases, including ABL, RET, and SRC, as well as several serine/threonine kinases.

A natural polyamine that plays diverse roles in signal transduction and metabolism; involved in growth, development, and stress responses in plants.

A natural isoflavone which is biotransformed by intestinal bacteria to give the phytoestrogens daidzein and equol, resulting in antithrombotic, antiallergic, and other salutary effects; modulates serotonin receptors when given intraperitoneally; suppresses LPS-mediated activation of NF-κB in…

A receptor antagonist acting at the muscarinic receptors (Ki = 5.5, 47, 0.84, 8.6, and 2.3 nM for M1 through M5, respectively); effective in treating problems related to the lower urinary tract.

A selective inhibitor of TAF1 bromodomain 2 (Kd = 1.8 µM; IC₅₀ = 0.9 µM); synergizes with (+)-JQ1 to inhibit the proliferation of THP-1 and H23 lung adenocarcinoma cells.