A mycotoxin produced in food and animal feeds; activates estrogen receptors, alters hormone levels, and hasten pre-pubertal development; can cause uterine, rectal, and vaginal prolapse, abortion, and infertility in older animals.

An ATP-competitive Chk1 inhibitor (Ki = 0.49 nM) that demonstrates 100-fold selectivity over Chk2; abrogates DNA damage-induced cell cycle arrest in tumor cell lines and xenografts, potentiating the antiproliferative effects of various chemotherapeutics.

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 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 SCFMET30 ubiquitin ligase, an E3 ligase that regulates transcription, cell-cycle control, and immune response; at 5 μM, upregulates a set of methionine biosynthesis genes by altering the SCFMET30 complex, preventing ubiquitination of target proteins, including Met4.

An intermediate in several metabolic pathways, including glycolysis and gluconeogenesis.

A brain-penetrant inhibitor of CSF1R, as well as c-Kit and FLT3 (IC₅₀s = 20, 10, and 160 nM in vitro, respectively); blocks macrophage recruitment in mammary tumor-bearing mice and blocks glioblastoma invasion in both cell culture and a mouse model of glioblastoma multiforme.

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 biotinylating reagent that contains two aminohexanoic spacers to increase the efficiency of avidin-binding by alleviating steric hindrance.

A broad spectrum antibiotic that is in the β-lactam subclass known as carbapenems; effective against many Gram-negative and Gram-positive bacteria and is more effective against P. aeruginosa than other carbapenems; not effective against MSRA.

A small molecule that stimulates the expression of PGC-1α and downstream genes in skeletal muscle cells, improving glucose utilization and fatty acid oxidation at a concentration of 20 μM; 15 mg/kg/day administered to diabetic db/db mice improved glucose tolerance, pyruvate tolerance, and…

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.

A protein cross-linking agent isolated from G. jasminoides Ellis; inhibits UCP2 activity; 5 µM genipin increases glucose-stimulated insulin secretion in isolated pancreatic islets chronically exposed to high levels of glucose; induces apoptosis in FaO rat hepatoma cells and human…

A selective antagonist of BET bromodomains, binding with 10-100-fold higher affinity for BD2 (IC₅₀ = 0.04-0.28 µM) over BD1 (IC₅₀ = 1.8-3.1 µM), which causes selective release of BET proteins from chromatin; increases the expression of ApoA1 and reduces…

A symmetric bis-glycolamide that inhibits the eIF2α phosphorylation-mediated unfolded protein response (IC₅₀ = 5 nM in a cell-reporter assay); passes through the blood-brain barrier and significantly enhances learning and memory in mice and rats.

An orally active, allosteric Akt inhibitor (IC50s = 5, 12, and 65 nM for Akt1, 2, and 3, respectively); inhibits cell proliferation of human cancer cell lines synergistically in combination with other topoisomerase inhibitors, antimetabolites, antimicrotubule agents, DNA cross-linkers or growth…

A potent, selective inhibitor of ATR (IC₅₀ = 5 nM); inhibits the growth of LoVo colorectal adenocarcinoma cells in vitro and significantly reduces the growth of LoVo xenografts in mice.

An imidazobenzodiazepine derivative that competitively inhibits benzodiazepine binding to GABAA receptors (IC₅₀ = 2 nM); used to reverse sedation induced by benzodiazepine drugs and is effective in the treatment of benzodiazepine overdose or withdrawal.

An ER agonist that binds to ERα and ERβ with Ki values of 27.4 and 15.4 nM, respectively; demonstrates higher ER agonist activity at ERα compared to ERβ (EC50 = 66 and 330 nM, respectively).

A selective inhibitor of ABHD6 (IC₅₀ = 10 nM) with negligible activity against other serine hydrolases such as DAGLβ; used both as a probe to study ABHD6 and as a negative control for studies of DAGLβ.

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.

An alkaloid metabolite of nicotine as well as a major product of its pyrolysis; binds comparably to CYP2A6 and CYP2A13 (Kis = 7.5 and 5.6 µM, respectively), but appears to more effectively inactivate CYP2A6.

A small molecule pan activator of Ras-related GTPases, activating cdc42, Ras, and Rac1 with EC₅₀ values of 102, 109, and 151 nM, respectively.

A potent, selective, reversible inhibitor of epidermal growth factor receptor (EGFR) kinase (Ki = 5.2 pM; IC₅₀ = 29 pM); rapidly suppresses autophosphorylation of EGFR in ?broblasts and human epidermoid carcinoma cells.

Thioester analogs of glycerophospholipids, in combination with Ellman’s reagent, are convenient colorimetric substrates for the measurement of phospholipase activity. HEPC is a truncated analog of phosphatidylcholine with the entire sn-1 substituent deleted, and with a hexadecylthioester in…

A non-selective bromodomain inhibitor that at 1 µM has been shown to accelerate FRAP recovery of BRD4 and CREBBP bromodomains in HeLa cells.

A dihydropteridinone that inhibits Plk1, Plk2, and Plk3 (IC₅₀s = 0.87, 5, and 56 nM, respectively), inducing mitotic arrest and apoptosis; inhibits proliferation of multiple cancer cell lines (EC₅₀s = 11-37 nM) and prevents the growth of various human carcinoma xenografts in mice.

An inhibitor of the HATs p300 and pCAF (IC50 = 7 and 5 μM, respectively) that also inhibits the HAT Gcn5; promotes neurogenesis and ex vivo expansion of human hematopoietic stem cells; induces apoptosis in several types of cancer cells and has anti-inflammatory actions.

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.

C-8 ceramide is a cell-permeable analog of naturally occurring ceramides. Unlike C-2 ceramide, it is metabolized within cells to generate natural ceramides, often causing a dramatic increase in cellular ceramide levels. For this reason, treatment of cells with C-8 ceramide may more closely mimic…

A cell permeable analog of cAMP that activates PKA with a Ka value of 0.05 μM; more stable to hydrolysis and has increased membrane permeability compared to unmodified cAMP.

An antagonist of MDM2 that suppresses the growth of cancer cell lines expressing wild-type p53 (IC₅₀ values range from 240-440 nM); orally bioavailable, having anti-proliferation as well as apoptotic actions in various tumor models; affects multiple signaling pathways.