Benzene Quinones

Coenzyme Q10 is an essential cofactor of the electron transport chain and a potent antioxidant agent.

Geldanamycin is a Hsp90 inhibitor with antimicrobial activity against many Gram-positive and some Gram-negative bacteria. Geldanamycin has anti-influenza virus H5N1 activities.

6PPD-Q (6PPD-Quinone) is an environmental pollutant that can be detected in human urine and is widely present in the environment. 6PPD-Q targets and binds to CNR2, CNR1, AA2AR, LCAT, and TRPA1, with CNR2 exhibiting the highest binding affinity, potentially acting as a CNR2 receptor agonist to activate cannabinoid receptors. 6PPD-Q induces intestinal inflammation and barrier damage by disrupting mitochondrial function, reducing neuronal glycolysis metabolites and TCA cycle intermediates, and exacerbating α-synuclein (α-syn) aggregation. 6PPD-Q is applicable in research on environmental toxicology, neurodegenerative diseases, and inflammation-related disorders.

Pyrroloquinoline quinone (PQQ), a redox co-factor, is an anionic, redox-cycling orthoquinone. Pyrroloquinoline quinone is isolated from cultures of methylotropic bacteria and tissues of mammals. Pyrroloquinoline quinone is an essential nutrient for mammals and is important for immune function.

Ubiquinone-1 is an intermediate in the synthesis of Coenzyme Q. Ubiquinone-1 can be reduced by NADPH oxidase, hepatoma cells, Ascorbic acid (HY-B0166).

Sterekunthal B is a naphthoquinone compound and antimalarial agent. Sterekunthal B can be isolated from plants of the Bignoniaceae family, including the root bark of Stereospermum colais. Sterekunthal B inhibits the growth of Chloroquine (HY-17589A)-sensitive Plasmodium falciparum strain PoW with an IC₅₀ of 23.3 μg/mL. Sterekunthal B also inhibits the growth of Chloroquine-resistant Plasmodium falciparum strain Dd2 with an IC₅₀ of 15.2 μg/mL. Sterekunthal B exhibits non-selective cytotoxicity toward endothelial cells. Sterekunthal B can be used in malaria-related research.

Ubiquinone Q3 is an isoprenoid-chain ubiquinone homologue found in Saccharomyces cerevisiae, Escherichia coli, and Rhodospirillum rubrum. Ubiquinone Q3 has antioxidant activity and traps lipid peroxyl radicals.

Diospyrin is a dinaphthoquinone anticancer agent with pro-apoptotic (apoptosis) activity, glutathione S-transferase (Glutathione S-transferase) inhibitory activity, and topoisomerase (Topoisomerase) I inhibitory activity. Diospyrin is present in the heartwood of various Diospyros plants and can be used for research on Ehrlich ascites carcinoma, acute myeloid leukemia, chronic myeloid leukemia, mammary adenocarcinoma, cervical epithelial carcinoma, malignant cutaneous melanoma, laryngeal epidermoid carcinoma, human osteosarcoma, and human lymphoblastic carcinoma.

Thymoquinone is an orally active natural product isolated from N. sativa Thymoquinone down-regulates the VEGFR2-PI3K-Akt pathway. Thymoquinone has antioxidant, anti-inflammatory, anticancer, antiviral, anticonvulsant, antifungal, antiviral, antiangiogenic activity and hepatoprotective effects. Thymoquinone can be used to study Alzheimer's disease, cancer, cardiovascular disease, infectious disease and inflammation .

Embelin (Embelic acid), a potent, nonpeptidic XIAP inhibitor (IC₅₀=4.1 μM), inhibits cell growth, induces apoptosis, and activates caspase-9 in prostate cancer cells with high levels of XIAP. Embelin blocks NF-kappaB signaling pathway leading to suppression of NF-kappaB-regulated antiapoptotic and metastatic gene products. Embelin also induces autophagic and apoptotic cell death in human oral squamous cell carcinoma cells.

Pyrroloquinoline quinone disodium salt, a redox co-factor, is an anionic, redox-cycling orthoquinone. Pyrroloquinoline quinone disodium salt is isolated from cultures of methylotropic bacteria and tissues of mammals. Pyrroloquinoline quinone disodium salt is an essential nutrient for mammals and is important for immune function.

Coenzyme Q9 (Ubiquinone Q9), the major form of ubiquinone in rodents, is an amphipathic molecular component of the electron transport chain that functions as an endogenous antioxidant. Coenzyme Q9 attenuates the diabetes-induced decreases in antioxidant defense mechanisms. Coenzyme Q9 improves left ventricular performance and reduces myocardial infarct size and cardiomyocyte apoptosis.

2,6-Dimethoxy-1,4-benzoquinone is a 1,4-benzoquinone derivative. 2,6-Dimethoxy-1,4-benzoquinone promotes phosphorylation of AKT, S6K, mTOR, 4E-BP1, and AMPK, and attenuates mTORC1 activity as part of the AKT/mTOR pathway. 2,6-Dimethoxy-1,4-benzoquinone stimulates myoblast differentiation, increases myotube size, elevates MHC protein expression, enhances mitochondrial biogenesis, respiration, and DNA content, and increases skeletal muscle weights, fiber size, grip strength, and treadmill performance. 2,6-Dimethoxy-1,4-benzoquinone exerts anti-cancer, anti-inflammatory, anti-adipogenic, antibacterial, and antimutagenic effects, inhibits adipogenic transcription factors, nitric oxide production, skin tumor development, Magnaporthe oryzae growth, spore germination, appressorium formation, and growth of select bacterial species, induces H₂O₂ generation and rice defense gene expression, and reduces rice blast lesion formation. 2,6-Dimethoxy-1,4-benzoquinone can be used for the research of obesity, skin tumorigenesis, rice blast disease, and food-borne illness.

Streptonigrin (Bruneomycin) is an orally active antibiotic and pan-PAD inhibitor, inhibiting PAD1, PAD2, PAD3 and PAD4 with IC₅₀ of 48.3 μM, 26.1 μM, 0.43 μM and 2.5 μM, respectively. Streptonigrin inhibits SENP1 (IC₅₀ of 0.518 μM) and reduces HIF1α. Streptonigrin increases p53 and Apoptosis. Streptonigrin shows antiviral activity against Rauscher murine leukemia virus. Streptonigrin has immunosuppressive effects. Streptonigrin has antitumor activity against osteosarcoma.

Coenzyme Q10 (Standard) is the analytical standard of Coenzyme Q10. This product is intended for research and analytical applications. Coenzyme Q10 is an essential cofactor of the electron transport chain and a potent antioxidant agent.

Isodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities.

Oosporein is a microbial metabolite and a red crystalline toxin produced by various fungi. Oosporein can promote the reproduction of fungi in host bodies by inhibiting insect immunity, and possesses multiple activities such as antibacterial, antiviral (HSV), and insecticidal effects. Oosporein can inhibit plant growth. In addition, Oosporein can also induce apoptosis, cell membrane damage, oxidative stress, and mitochondrial damage. Oosporein has certain antitumor activity.

D-α-Tocopherylquinone (α-Tocopherylquinone) is a quinone, can be isolated from Phaeodactylum tricornutum. D-α-Tocopherylquinone is an oxidation product of α-Tocopherol (vitamin E). D-α-Tocopherylquinone can act as an anticoagulant and as an antioxidant. D-α-Tocopherylquinone reduces cellular oxidative damage produced by oxidized lipids. D-α-Tocopherylquinone binds to a liver cytosolic protein with a molecular mass of about 40 kDa. D-α-Tocopherylquinone binds to glurathione-S-transferase (GST) and can be transported to the site of metabolism or excreted in the bile.

Mitomycin A is an antitumor agent. Mitomycin A inhibits the spontaneous migration of mouse monocytes. Mitomycin A inhibits the production of MIF (Migration Inhibition Factor) by human lymphocytes. Mitomycin A can be used in the research of tumor diseases.

Rapanone is a natural benzoquinone. Rapanone exhibits a broad spectrum of biological actions, including anti-tumor, antioxidant, anti-inflammatory, antibacterial and antiparasitic. Rapanone also is a potent and selective human synovial PLA₂ inhibitor, with an IC₅₀ of 2.6 μM.