naphthoquinone

1,4-Naphthoquinone (P-Naphthoquinone) was used as a potential inhibitor of monoamine oxidase and DNA topoisomerase activities[2]. It was also used to inhibit the acetyltransferase activity[1].

2-Amino-3-carboxy-1,4-naphthoquinone is an electron transfer mediator that can alter glucose metabolism in homofermentative lactic acid bacteria. It also serves as a novel growth stimulator for bifidobacteria, influencing their end-product profile through the mediated oxidation of NAD(P)H.

Quinoclamine is a naphthoquinone derivative and is an NF-κB inhibitor.

Lawsone (Hennotannic acid) (2-hydroxy-1,4-naphthoquinone), also known as hennotannic acid, is a red-orange dye present in the leaves of the henna plant (Lawsonia inermis) as well as in the flower of water hyacinth (Eichhornia crassipes).

Lawsone methyl ether (2-Methoxy-1,4-naphthoquinone) induces apoptosis in A549 cells independently of cell cycle arrest, mediated by JNK and p38 MAPK signaling pathways. These pathways are activated due to oxidative DNA damage from increased ROS generation in MNQ-treated A549 cells.

Juglone (Regianin) is a natural naphthoquinone found in the black walnut (J. nigra) and other plants in the Juglandaceae family. Juglone also irreversibly inhibits peptidyl-prolyl cis/trans isomerases of the parvulin family, including human Pin1, yeast Ess1/Ptf1, and E. coli parvulin (Ki = 55.9 nM). Juglone also blocks transcription by RNA polymerases I, II, and III (IC50s = 2-7 μM) and attenuates kidney fibrosis in rats treated with unilateral ureteral obstruction, both through Pin1-independent mechanisms.

Antimalarial agent 14 (NSC-102533) is a bioactive chemical.

Naphthazarin (5,8-Dihydroxy-1,4-naphthoquinone) is effective by various cellular mechanisms including oxidative stress, activation of mitochondrial apoptosis-inducing factor (AIF), depolymerization of microtubules, interference with lysosomal function and p53-dependent p21 activation. It triggers apoptosis and has anti-tumor effects

Chimaphilin is a natural product for research related to life sciences. The catalog number is TN5795 and the CAS number is 482-70-2.

2-Chloronaphthoquinone (2-Chloro-1,4-naphthoquinone) is a substituted naphthoquinone which is used as an insecticide and acaricide.

Potassium 1,2-naphthoquinone-4-sulphonate (Compound 16) acts as an inhibitor of 6-phosphogluconate dehydrogenase (6PGDH) with an IC50 of 53 μM. This compound is applicable in research related to human African trypanosomiasis.

1,2-Naphthoquinone inhibits urease in bacteria and plants, induces apoptosis in PBMC cells, and exhibits inhibitory activity against hiCE, hCE1, hAChE, and hBChE.

2-Carbamoyl-3-hydroxy-1,4-naphthoquinone is a natural product for research related to life sciences. The catalog number is TN5790 and the CAS number is 103646-20-4.

6-Methyl-1,4-naphthoquinone is a reagent used in biochemical reactions.

Menadione (Vitamin K3) is a synthetic naphthoquinone without the isoprenoid side chain and biological activity, but can be converted to active vitamin K2, menaquinone, after alkylation in vivo.

Plumbagin (Plumbaein) is a yellow dye, formally derived from naphthoquinone. It is named after the plant genus Plumbago, from which it was originally isolated. It is also commonly found in the carnivorous plant genera Drosera and Nepenthes. It is also a component of the black walnut drupe.

2-Hydroxyanthraquinone is an anthraquinone that has been found inSpermacoce latifoliaand has antibacterial and estrogenic activities.1,2It is active againstB. subtilisandB. cereus(MICs = 1.9 and 62.5 μg/ml, respectively).12-Hydroxyanthraquinone (19 μM) induces estrogen receptor α (ERα) activation in a yeast two-hybrid assay.2 1.Luo, Y., Shen, H.-Y., Shen, Q.-X., et al.A new anthraquinone and a new naphthoquinone from the whole plant of Spermacoce latifoliJ. Asian Nat. Prod. Res.19(9)869-876(2017) 2.Kurihara, R., Shiraishi, F., Tanaka, N., et al.Presence and estrogenicity of anthracene derivatives in coastal Japanese watersEnviron. Toxicol. Chem.24(8)1984-1993(2005)

FUT8-IN-1 (Compound 37) is an inhibitor of α-1,6-fucosyltransferase (FUT8), with a dissociation constant (KD) of 49 nM and an IC50 around 50 µM. In the presence of FUT8, FUT8-IN-1 forms a highly active naphthoquinone imine intermediate, thereby inhibiting FUT8's enzymatic activity.

6-Ethoxyethyl-5-hydroxy-2,7-dimethoxy-1,4-naphthoquinone is a naphthoquinone compound known to cause withering of larch branches and inhibit the germination and growth of lettuce seeds. At a concentration of 100 ppm, it completely inhibits the growth of hypocotyls and roots, and at 50 ppm, it suppresses over 95%.

MEK Inhibitor II (2-Chloro-3-(N-succinimidyl)-1,4-naphthoquinone) is a selective MEK1 inhibitor (IC50=0.38 μM) that inhibits tubulin polymerization in Trypanosoma cruzi (IC50=6 μM) and exhibits inhibitory activity against trypanosomes (IC50=2.77 μM).

A 80915A is A semi-naphthoquinone antibiotic from Streptomyces aculeolatus. It is a potent inhibitor of gastric (H(+)-K+)-ATPase. Inhibition by A80915A is dependent on the conformation of gastric (H(+)-K+)-ATPase, potassium slows the rate of inhibition by

(Rac)-Shikonin (Anchusin) is a natural red naphthoquinone pigment, has antimicrobial, anti-tumor, and anti-inflammatory effects; a purified shikonin preparation is widely used for the production of medicinals, cosmetics, and some food products; shikonin also enters into the antiinflammatory ointment and cream compositions used for the treatment of burns. It can suppress the cell viability, adhesion, invasion and migratory ability of MGC-803 cells through TLR2- or NF-κB-mediated pathway.

AK-135 is a derivative of 1,4-naphthoquinone (Menadione). AK-135 has been shown to restore the electron flow in defective respiratory chain (hypoxia or rotenone) systems more effectively than Menadione.

Biflorin is an o-naphthoquinone of clinical significance.