An H2S donor commonly used in cellular and whole animal experimental systems.

A first generation histamine H1 receptor antagonist (Ki = 2.6 nM) that also inhibits muscarinic acetylcholine receptors (Ki = 22 nM); penetrates the CNS, depressing central H1 receptor activity, which may relate to its sedative properties.

A naturally occurring O-methylated phenolic acid that can be enzymatically degraded by some bacteria as a source of methane or methanol; inhibits aldose reductase (IC₅₀ = 213 µg/ml), proteasome activity, and cancer cell proliferation.

A common 16-carbon saturated fatty acid that represents 10-20% of the normal human dietary fat intake.

A monosaccharide derivative of glucose that is released by the action of O-GlcNAcase, in mammalian systems, from proteins that have been post-translationally modified with O-GlcNAc; also is the monomeric unit of chitin, which is found in fungi and many inverebrates, including crustaceans, insects,…

Urinary metabolite of leucine that is used as a diagnostic tool in the diagnosis of various acidemias and mitochondrial fatty acid β-oxidation defects.

A flavone that modulates xenobiotic metabolism; antagonizes AhR at nanomolar concentrations, although it agonizes AhR at higher concentrations (10 µM); inhibits CYP19, CYP1A1, CYP1A2, and CYP1B1 (IC₅₀s = 500, 60, 6, and 5 nM, respectively), whereas it activates CYP3A4 (Kd = 7.4 µM).

Cathepsin K is a lysosomal cysteine protease found in osteoclasts whose elevated activity has been linked to the formation of osteoporosis and arthritis. 2-cyano-Pyrimidine is a cathepsin K inhibitor whose basic structure and derivatives are being studied for the treatment of osteoporosis.…

A low molecular weight nonionic detergent that is commonly used for cell lysis and non-denaturing protein solubilization.

A third generation fluoroquinolone with antibacterial activity; inhibits type II topoisomerases (IC₅₀s = 8.06 and 9.81 µg/ml for DNA gyrase and topoisomerase IV, respectively).

An N-acetylglucosamine derivative that has been shown to promote hyaluronic acid production.

A derivative of thiouracil which has long been used to correct hyperthyroidism; also used as a genetic marker for taste, since only some people detect it as a bitter taste.

One of two cyclic forms of D-glucose that is the monomer unit in cellulose.

A dye that is commonly used in laboratories to stain or quantify proteins; typically gives blue bands on a clear background with a sensitivity of 50-100 ng/band; displays metachromasia by appearing pink-red, rather than blue, when binding certain proteins, such as collagen and histone H1.

A dye used to stain proteins for IEF and SDS-PAGE; fluoresces near infrared (absorption maximum: 624 nm).

A cyclic diacyl hydrazide that exhibits chemiluminescence upon oxidation; HRP combined with H₂O₂ causes luminescent peroxidation of luminol; can also be oxidized, and chemiluminesce, by compounds containing iron, copper, gold, and cyanide.

A central nervous system modulator that is used to experimentally induce seizures in animals; used extensively to screen for compounds that block the production of nonconvulsive (absence or myoclonic) seizures.

A long-acting ascorbic acid derivative that stimulates collagen expression and formation and is used in human cell culture; included in media to enhance the survival of human embryonic stem cells or drive osteogenic differentiation in human adipose stem cells and in human mesenchymal stromal/stem cells.

A second generation antihistamine that acts as a selective histamine H1 receptor antagonist (pKi = 8).

A fluoroquinolone antibiotic widely used as an antimicrobial and immunomodulatory agent; functions by inhibiting DNA A fluoroquinolone antibiotic widely used as an antimicrobial and immunomodulatory agent; functions by inhibiting DNA gyrase (a type II topoisomerase) and topoisomerase IV, the…

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).

A pyrimadine analog that irreversibly inhibits thymidylate synthase, blocking the synthesis of thymidine which is required for DNA synthesis; widely used to treat many gastrointestinal tract adenocarcinomas.

A red/orange-colored fat-soluble terpenoid with antioxidant properties; can be cleaved to produce vitamin A and retinoic acid.

An inhibitor of respiration in animals and bacteria; binds at the quinone reduction site of succinate:ubiquinone oxidoreductase (SQR; Complex II) in animals, preventing ubiquinone from binding; inhibits NADH fumarate reductase in bacteria; inhibits photosystem II in plants.

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 central component of energy storage and metabolism in vivo, providing the metabolic energy to drive metabolic pumps and serving as a coenzyme in a wide array of enzymatic reactions; acts a substrate for kinases involved in cell signaling and of adenylate cyclases that produce the second messenger cAMP.

A blue non-fluorescent dye that is used as an oxidation-reduction indicator in cell viability assays in a variety of cells; can be reduced to the highly red-fluorescent product resorufin (excitation: 530-540 nm; emission: 585-595 nm) and used as a quantifiable detection agent in enzyme activity or…

A cell-permeable, fluorescent dye that accumulates in acidic organelles in a pH-dependent manner and is used for autophagy detection and cell cycle determination; emits green fluorescence (ex. max: 502 nm; ,em. max: 525 nm) at neutral pH or when bound to dsDNA and red fluorescence (ex. max: 460 nm;…

A natural form of vitamin A that is thermally more stable than retinol; can reduce cell proliferation and promote differentiation.

A natural plant sterol that can be isolated from certain seed oils and herbs, including those used for therapeutic purposes.

A mixture of proteolytic enzymes derived from the stem and fruit of pineapple plants; studied for a number of potential beneficial effects including anti-inflammatory, anti-thrombotic, fibrinolytic, and anti-cancer functions.

An alcoholic β-glucoside derived from willow bark that produces anti-inflammatory (including analgesic and antipyretic) effects similar to that of aspirin by non-selectively inhibiting COX-1 and COX-2 (IC₅₀s > 100 µM).