l. major

PK 11195 (RP 52028) is a TSPO ligand for neuroimaging that exhibits significant protection against CoCl2-induced alterations and can be used to study leishmaniasis.

K777 is a potent, orally active, and irreversible inhibitor of cysteine protease, functioning as a potent CYP3A4 inhibitor (IC50 = 60 nM) and a selective CCR4 antagonist, which inhibits chemotaxis. K777 irreversibly inhibits Cruzain, the major cysteine protease of Trypanosoma cruzi, and cathepsins B and L, targeting cathepsin-mediated cell entry and exhibiting broad-spectrum antiviral activity. It inhibits EBOV and SARS-CoV pseudovirus entry with IC50 values of 0.87 nM and 0.68 nM, respectively.

Vincamine (Perval) is a major alkaloid of Vinca minor L., Apocynaceae. It has been used therapeutically as a vasodilator and antihypertensive agent, particularly in cerebrovascular disorders.

L-Thyroxine sodium (LT4 sodium), the major hormone derived from the thyroid gland, is the agonist of Thyroid hormone receptor alpha and beta.

3-Nitro-L-tyrosine (3-Nitrotyrosine) is the major product from the spontaneous reaction of peroxynitrite with tyrosine. Formation of nitrotyrosine can indicate the formation of peroxynitrite by a nitric oxide (NO)-dependent oxidative damage.

N-acetyl-L-methionine is nutritionally and metabolically equivalent to L-methionine. Methionine is a dietary indispensable amino acid required for normal growth and development of humans, other mammals, and avian species. In addition to being a substrate

2'-Deoxycytidine is one of the major nucleosides of DNA consisting of cytosine and deoxyribose and inhibits the biological effects of bromodeoxyuridine (Brdu). The nucleoside consists only of a pentose sugar attached to a purine or pyrimidine base and has no phosphate group. When N1 is attached to C1 of deoxyribose, deoxyribosides and nucleotides are formed from cytosine and deoxyribose; deoxycytidine monophosphate (dCMP), deoxycytidine diphosphate (dCDP), and deoxycytidine triphosphate (dCTP). cTP is the source of cytosine in RNA (ribonucleic acid) and deoxycytidine triphosphate (dCTP) is the source of deoxycytidine in DNA (deoxyribonucleic acid). Itaconic acid is a polymer.

Corylin is a major bioactive compound isolated from Psoralea corylifolia L; it has the activity of antibiotic or anticancer.

Harmalol hydrochloride (Harmidol hydrochloride) is a β-carboline alkaloid that can be extracted from the seeds of Peganum harmala L. Harmalol hydrochloride is the major metabolite of Harmaline and significantly inhibits dioxin-mediated induction of CYP1A1 at both transcriptional and post-translational levels. Harmalol hydrochloride showed vasorelaxant activity in isolated rat thoracic aortic preparations preconstricted with phenylephrine or KCl. Harmalol hydrochloride has antioxidant activity.

L-Thyroxine (NSC 36397) is the major hormone derived from the thyroid gland. L-Thyroxine (NSC 36397) is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. L-Thyroxine (NSC 36397) is released from thyroglobulin by proteolysis and secreted into the blood. L-Thyroxine (NSC 36397) is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.

SID 26681509 is a selective, reversible and competitive human cathepsin L inhibitor (IC50 of 56 nM).

Methyl β-D-glucopyranoside (Methyl β-D-glucoside) is the major compound in the leaf blade of the alpine herb Geum montanum L. It biotransforms glucosides from Pichia etchellsii to higher chain alkyl glucosides via cell-bound β-glucosidase.

NEU-1017 serves as a broad-spectrum antiparasitic compound, effectively inhibiting T. brucei, L. major, and P. falciparum with EC50 values of 210 nM, 240 nM, and 3 nM, respectively.

L-NIL HCl is a relatively selective iNOS inhibitor (IC50s: 0.4-3.3, 8-38, and 17-92 µM for iNOS, eNOS, and nNOS). L-NIL effectively inhibits iNOS both in vitro and in vivo. L-NIL has been used to demonstrate a critical role for iNOS in the immune response

NEU-1045 is a T. brucei proliferation inhibitor, and is a promising lead with cross-pathogen activity. NEU-1045 inhibited T. brucei, T. cruzi, and L. major proliferation with good potency (T. brucei EC50 = 0.37 μM; T. cruzi EC50 = 2.8 μM; L. major EC50 =

G-Glu-Val (γ-glutamyl-L-valine, H-Glu-Val -OH), a flavour-regulating dipeptide, is a major contributor to mellow .

L 692199 is a major metabolite of L-691,121.

Phosphatidylcholines (PC) are a class of phospholipids that incorporate choline as a headgroup. They are a major component of biological membranes and can be easily obtained from a variety of readily available sources, such as egg yolk or soybeans, from w

Bile acids are essential for solubilization and transport of dietary lipids, are the major products of cholesterol catabolism, and are physiological ligands for farnesoid X receptor (FXR), a nuclear receptor that regulates genes involved in lipid metabolism.1They are also inherently cytotoxic, as physiological imbalance contributes to increased oxidative stress.2,3Bile acid-controlled signaling pathways are promising novel targets to treat such metabolic diseases as obesity, type II diabetes, hyperlipidemia, and atherosclerosis.Guggulsterone, derived from resin of the guggul tree, is a competitive antagonist of FXR bothin vitroandin vivo.4Thecisstereoisomer of guggulsterone, (E)-guggulsterone, decreases chenodeoxycholic acid (CDCA)-induced FXR activation with an IC50value of 15 μM.5,6By inhibiting CDCA-induced transactivation of FXR, guggulsterone lowers low-density lipoprotein cholesterol and triglyceride levels in rodents fed a high cholesterol diet.4 1.Makishima, M., Okamoto, A.Y., Repa, J.J., et al.Identification of a nuclear receptor for bile acidsScience2841362-1365(1999) 2.Barbier, O., Torra, I.P., Sirvent, A., et al.FXR induces the UGT2B4 enzyme in hepatocytes: A potential mechanism of negative feedback control of FXR activityGastroenterology1241926-1940(2003) 3.Tan, K.P., Yang, M., and Ito, S.Activation of nuclear factor (erythroid-2 like) factor 2 by toxic bile acids provokes adaptive defense responses to enhance cell survival at the emergence of oxidative stressMol. Pharmacol.72(5)1380-1390(2007) 4.Urizar, N.L., Liverman, A.B., Dodds, D.T., et al.A natural product that lowers cholesterol as an anatagonist ligand for FXRScience296(5573)1703-1706(2002) 5.Cui, J., Huang, L., Zhao, A., et al.Guggulsterone is a farnesoid X receptor antagonist in coactivator association assays but acts to enhance transcription of bile salt export pumpThe Journal of Biological Chemisty278(12)10214-10220(2003) 6.Wu, J., Xia, C., Meier, J., et al.The hypolipidemic natural product guggulsterone acts as an antagonist of the bile acid receptorMolecular Endocrinology16(7)1590-1597(2002)

Bavachalcone, a major bioactive compound isolated from *Psoralea corylifolia* L., may serve as a therapeutic drug for bone resorption-associated diseases. It protects endothelial function by increasing AMPK activity and MnSOD expression while reducing mitochondrial oxidative stress.

Solamargine (δ-Solanigrine) is a major steroidal alkaloid glycoside extracted from a traditional Chinese medicine herb, Solanum nigrum L. (SNL); has been shown to inhibit growth and induce apoptosis of various cancer cells.

MDNI-glu is a photosensitive derivative of L-glutamate, a major excitatory amino acid, that is biologically inert. It demonstrates improved utilization of incident light.

1. Artemisic acid ((+)-Artemisinic Acid) shows antibacterial activity. 2. Artemisinic acid is a major precursor of artemisinin (an antimalaric compound), isolated as the active principles of the medicinal plant Artemisia annua L.

Stachydrine (N,N-Dimethyl-L-proline) is a major constituent of Chinese herb leonurus heterophyllus sweet used to promote blood circulation and dispel blood stasis. Stachydrine (N,N-Dimethyl-L-proline) can inhibit the NF-κB signal pathway. Stachydrine (N,N-Dimethyl-L-proline) is a biomarker for the consumption of citrus fruits.