Folitixorin calcium is an antineoplastic enhancing agent.

Heparin cofactor II precursor (SERPIND1) fragment [Homo sapiens] is a peptide with the sequence H2N-Phe-Thr-Val-Asp-Arg- Pro-Phe-Leu-Phe-Leu-Ile-Tyr-Glu-His-Arg-OH, MW=1953.25.

Heparin cofactor II precursor fragment [Homo sapiens] is a peptide with the sequence H2N-Tyr-Glu-Ile-Thr-Thr-Ile-His-Asn-Leu-Phe-Arg-OH, MW=1406.58.

Penicillamine (Artamine), possessing antineoplastic properties, induces apoptosis by a p53-mediated mechanism and inhibits angiogenesis by chelating with copper, a cofactor for angiogenesis. Artamine is a beta dimethyl analog of the amino acid cysteine. As a degradation product of penicillin antibiotics, Artamine chelates with heavy metals and increases their urinary excretion.

Pyrroloquinoline quinone disodium salt (Methoxatin disodium salt), an aromatic tricyclic o-quinone, is a redox cofactor for bacterial dehydrogenases. It is an efficient electron transfer catalyst from a number of organic substrates to molecular oxygen (O2), constructing quinoprotein model reactions.

Diisopropyl xanthogen disulfide (NSC-1339) can be used to synthesize a proligand for metal complexes related to the molybdenum cofactor.

H-D-Phe-Pip-Arg-pNA dihydrochloride (S-2238 dihydrochloride), a chromogenic substrate, mimics the N-terminal fragment of the A alpha chain of fibrinogen, the native substrate of thrombin. Specifically designed for thrombin detection, H-D-Phe-Pip-Arg-pNA dihydrochloride is employed for the quantification of antithrombin-heparin cofactor (AT-III). The AT-III assay utilizing this substrate is characterized by its sensitivity, accuracy, and ease of implementation.

L-Glutathione reduced (Glutathione) is a naturally occurring tripeptide found in cells as an endogenous antioxidant that scavenges oxygen free radicals. L-Glutathione reduced is a cofactor for certain enzymes and is involved in the rearrangement of protein disulfide bonds and the reduction of peroxides.

Folcysteine is a cysteine derivative with potential antitumor agent. It's a vitamin that used to synthesize DNA, conduct DNA repair and methylate DNA. It also acts as a cofactor in biological reactions involving folate.

Phosphatidylserine is a naturally occurring phospholipid that comprises 2-10% of total phospholipids in mammals and is enriched in the central nervous system, particularly the retina. It is anionic and found mainly on the inner leaflet of the cell membrane. It is biosynthesized from phosphatidylcholine or phosphatidylethanolamine by phosphatidyl synthase 1 (PSS1) or PSS2, respectively, in the endoplasmic reticulum and can be reversibly converted back by the same enzymes. It can also be irreversibly converted to phosphatidylethanolamine by phosphatidylserine decarboxylase in the mitochondria. Phosphatidylserine binds to T cell immunoglobulin mucin type 1 (TIM-1) and TIM-4 receptors as well as brain-specific angiogenesis inhibitor 1 (BAI1), leading to anti-inflammatory and anti-atherosclerotic effects. It is also a cofactor involved in the activation of various signaling pathways through activation of protein kinase C, neutral sphingomyelinase, and c-Raf-1 protein kinase among others. Phosphatidylserine is externalized during apoptosis by scramblases in the plasma membrane as a signal for phagocytes to engulf the cell. Phosphatidylserines (bovine) is a mixture of bovine phosphatidylserines containing fatty acids with variable chain lengths at the sn-1 and sn-2 positions.

Phosphatidylserine is a naturally occurring phospholipid that comprises 2-10% of total phospholipids in mammals and is enriched in the central nervous system, particularly the retina. It is anionic and found mainly on the inner leaflet of the cell membrane. It is biosynthesized from phosphatidylcholine or phosphatidylethanolamine by phosphatidyl synthase 1 (PSS1) or PSS2, respectively, in the endoplasmic reticulum (ER) and can be reversibly converted back by the same enzymes. It can also be irreversibly converted to phosphatidylethanolamine by phosphatidylserine decarboxylase in the mitochondria. Phosphatidylserine binds to T cell immunoglobulin mucin type 1 (TIM-1) and TIM-4 receptors as well as brain-specific angiogenesis inhibitor 1 (BAI1), leading to anti-inflammatory and anti-atherosclerotic effects. It is also a cofactor involved in the activation of various signaling pathways through activation of protein kinase C, neutral sphingomyelinase, and c-Raf-1 protein kinase among others. Phosphatidylserine is externalized during apoptosis by scramblases in the plasma membrane as a signal for phagocytes to engulf the cell. Phosphatidylserines (soy) is a mixture of soy phosphatidylserines containing fatty acids with variable chain lengths at the sn-1 and sn-2 positions.

Sapropterin is a naturally occurring essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the degradation of amino acid phenylalanine and in the biosynthesis of dopamine, epinephrine, melatonin, norepinephrine, neurotransmitter

Fibrinogen-Binding Peptide (designed by anticomplementarity hypothesis) is a presumptive peptide mimic of the vitronectin binding site on the fibrinogen receptor. Fibrinogen, a soluble plasma protein, is a cofactor in platelet activation. It is converted

Ristocetin A, a glycopeptide related to vancomycin, is an antibiotic produced by the microorganism Nocardia lurida[1]. Ristocetin A is currently in clinical use to treat bacterial infections [1]. Ristocetin A is an antibiotic which can be used to treat staphylococcal infections. The side effects of ristocetin A include thrombocytopenia and platelet agglutination. Ristocetin A has been used in two assays: the ristocetin cofactor assay and the ristocetin-induced platelet aggregation assay. These two assays could be used to diagnosis the von Willebrand disease and other bleeding disorders [2, 3]. The structural features of Ristocetin A are similar to vancomycin.

Aldehyde dehydrogenase NAD(P) (ALDH) is an enzyme that facilitates the conversion of aldehydes into their respective carboxylic acids while simultaneously reducing the cofactor NAD(P) to NAD(P)H, making it a key component in biochemical research. This enzyme plays a crucial role in mitigating aldehyde stress by being part of the body's array of enzymatic defenses [1].

Thiamine diphosphate analog 1, an analog of Thiamine diphosphate (the active form of vitamin B1 and a universal cofactor in key cellular pathways), mirrors the structure and potentially the function of its prototype.

α-D-Glucose-1,6-bisphosphate is abis-phosphorylated derivative of α-D-glucose that has roles in carbohydrate metabolism.1It is the product of the reaction of glucose-1- or 6-phosphate with glucose-1,6-bisphosphate synthase (PGM2LI) in the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate.2It is also a cofactor for the bacterial enzyme phosphopentomutase.3,4α-D-Glucose-1,6-bisphosphate has been used in the study of carbohydrate metabolism. 1.Beitner, R.Regulation of carbohydrate metabolism by glucose 1,6-bisphosphate in extrahepatic tissues; comparison with fructose 2,6-bisphosphateInt. J. Biochem.22(6)553-557(1990) 2.Maliekal, P., Sokolova, T., Vertommen, D., et al.Molecular identification of mammalian phosphopentomutase and glucose-1,6-bisphosphate synthase, two members of the α-D-phosphohexomutase familyJ. Biol. Chem.282(44)31844-31851(2007) 3.Moustafa, H.M.A., Zaghloul, T.I., and Zhang, Y.-H.P.A simple assay for determining activities of phosphopentomutase from a hyperthermophilic bacterium Thermotoga maritimaAnal. Biochem.50175-81(2016) 4.Panosian, T.D., Nannemann, D.P., Watkins, G.R., et al.Bacillus cereus phosphopentomutase is an alkaline phosphatase family member that exhibits an altered entry point into the catalytic cycleJ. Biol. Chem.286(10)8043-8054(2011)

Efanesoctocog alfa (BIVV001) is a humanized continuous procoagulant cofactor activity (CPCA) antibody [1].

NADP+ is the oxidized form of the electron donor nicotinamide adenine dinucleotide phosphate . It serves as a cofactor in various biological reactions. In addition, the balance between these reduced and oxidized forms plays key roles in diverse cellular functions, including cell survival, the maintenance of redox status, and intracellular signaling. For example, binding of NADP+ to β-subunits of Kv channels activates ion transport, whereas NADPH stabilizes channel inactivation. NADP+ is biosynthesized from NAD+ by NAD kinase, with ATP as the phosphoryl donor.

(6R,S)-5,6,7,8-Tetrahydrofolic acid (THFA), the reduced form of folic acid, serves as a cofactor in methyltransferase reactions and is the major one-carbon carrier in one carbon metabolism. Its metabolites participate in the synthesis of thymidine for incorporation into DNA or the synthesis of purines, as well as in the formation of methionine, which can be converted to the ubiquitous methyl donor, S-adenosylmethionine . THFA has also been used to study the activation of metabolite-binding riboswitches.

Phosphatidylethanolamine is the most abundant phospholipid in prokaryotes and the second most abundant found in the membrane of mammalian, plant, and yeast cells, comprising approximately 25% of total mammalian phospholipids. In the brain, phosphatidylethanolamine comprises almost half of the total phospholipids. It is synthesized mainly through the cytidine diphosphate-ethanolamine and phosphatidylserine decarboxylation pathways, which occur in the endoplasmic reticulum (ER) and mitochondrial membranes, respectively. It is a precursor in the synthesis of phosphatidylcholine and arachidonoyl ethanolamide and is a source of ethanolamine used in various cellular functions. In E. coli, phosphatidylethanolamine deficiency prevents proper assembly of lactose permease, suggesting a role as a lipid chaperone. It is a cofactor in the propagation of prions in vitro and can convert recombinant mammalian proteins into infectious molecules even in the absence of RNA. Phosphatidylethanolamines (soy) is a mixture of phosphatidylethanolamines isolated from soy with various fatty acyl groups at the sn-1 and sn-2 positions.

NH-3 is a potent orally active thyroid hormone receptor (THR) antagonist which exhibits reversible behavior, demonstrated by an IC 50 of 55 nM. Derived from the selective thyromi-metic GC-1, NH-3 effectively inhibits the binding of thyroid hormones to their respective receptors, resulting in hindered cofactor recruitment.

α-Lipoic Acid (DL-α-Lipoic acid) an octanoic acid bridged with two sulfurs so that it is sometimes also called a pentanoic acid in some naming schemes. It is biosynthesized by cleavage of LINOLEIC ACID and is a coenzyme of oxoglutarate dehydrogenase (KETOGLUTARATE DEHYDROGENASE COMPLEX). It is used in DIETARY SUPPLEMENTS.

NADPH tetracyclohexanamine (NADPH (tetracyclohexanamine)) is a cofactor and biological reducing agent.

NOC-5 is a stable nitric oxide (NO)-amine complex that acts as a NO donor. It can release two equivalents of NO in solution under physiological conditions without a cofactor. [1] The half-life of NOC-5 in PBS (pH 7.4) is 93 minutes at 22°C, and it remains relatively stable in alkaline solution (pH >=10.0). [1]

4-Hydroxyphenylbutazone, a metabolite of Phenylbutazone, functions as an effective reducing cofactor for the peroxidase activity of prostaglandin H synthase (PHS). Phenylbutazone is a nonsteroidal anti-inflammatory drug (NSAID) known for its efficiency in this role.

Complement factor I, a serine protease, attenuates complement activity both in the fluid phase and on cell surfaces, working alongside cofactors such as factor H (FH), complement receptor 1 (CR1/CD35), C4 binding protein (C4BP), or membrane cofactor protein (MCP/CD46) [1].

Fosdenopterin (Precursor Z) hydrobromide dehydrate is a synthetic cyclic pyrantel monophosphate (cPMP) that can be used in the study of molybdenum cofactor deficiency type A (MoCD).

Cytochrome c fragment (93-108) is a peptide from Cytochrome c, which is a small heme protein found loosely associated with the inner membrane of the mitochondrion. Cytochromes c from certain eukaryotes, including plants and fungi but not higher animals, contains methylated lysine residues at specific positions1. Cytochrome c is a required cofactor for Apaf-1 function2.

Adenosylcobalamin (AdoCbl) is a biologically active form of vitamin B12 .It is a cofactor for methylmalonyl CoA mutase. It belongs to the corrinoid group of compounds, which contain a corrin macrocycle, and is produced only by certain bacteria and archaea. It is a cofactor for various enzymes including mutases, eliminases, aminomutases, and a reductase.

Menaquinone-7 (Vitamin K2(35)) is a vitamin K2 analog, is originally discovered as the anti-hemorrhagic factors. Menaquinone-7 (Vitamin K2(35)) is identified as the most bioactive cofactor for the carboxylation reaction of Gla-proteins.

Tetrahydrobiopterin (BH4) is a cofactor for aromatic amino acid hydroxylases and an essential cofactor for nitric oxide synthase (NOS), which is used in the study of endothelial dysfunction such as hypertension, hypercholesterolemia, and diabetes.

6-Biopterin (L-Biopterin) is a natural product,is a NO synthase cofactor.

Adenosine 3',5'-diphosphate sodium salt is an inhibitor of hydroxysteroid sulfotransferases, which are adenine nucleotides containing a phosphate group at the 3' and 5' positions of the pentose ribose.Adenosine 3',5'-diphosphate (sodium salt) is the product of 3'-phosphoadenosine 5'-phosphosulfonate (PAPS), a cofactor of sulfotransferases (SULTs). diphosphate disodium is the product of 3'-phosphoadenosine 5'-phosphosulfonate (PAPS), a cofactor for sulfotransferases (SULTs), which has been used to study the kinetic properties and structure of SULTs.

SFNGGP-NH2 is a biologically active peptide that interacts with Protease-Activated Receptor 3 (PAR-3), a high-affinity thrombin receptor. Human cutaneous mast cells express PAR-3 mRNA, implicating a role in itch mechanotransduction, with both histamine-dependent and independent pathways reported. While PAR-3 alone does not induce itch, it may potentiate itch when co-expressed with PAR-4, enhancing thrombin's action. This suggests that PAR-3's primary function is not as a signal transmitter across the membrane, but rather as a cofactor necessary for PAR-4 activation.

Naroparcil, an orally available thioglycoside analog of 4-methylumbelliferyl β-D-xyloside, showed antithrombotic effects in the Wessler sludge model of venous thrombosis (jugular vein).Naroparcil enhanced the formation of the thrombin/heparin cofactor II complex, induced dermatophyte sulfate-like substances in plasma from treated rabbits appearance, but reduced the formation of thrombin/antithrombin III complexes in plasma incubated with (125I)-human alpha-thrombin.

Odiparcil is an orally active beta-d-thioxyloside analog. Odiparcil is an indirect thrombin inhibitor that exerts its anticoagulant effect through activation of antithrombin II (heparin cofactor II). It also has an antithrombotic activity associated with a reduced risk of adverse bleeding events.

Pyridoxamine 5′-phosphate, the active form of vitamin B6 phosphorylated, acts as a central metabolite, potent antioxidant, and enzyme substrate by serving as the aminated counterpart to pyridoxal 5'-phosphate hydrate. It plays a pivotal role as a cofactor for various enzymes and is a prominent vitamin B6 vitamer. The compound can be interconverted with pyridoxal 5'-phosphate hydrate [1].

Glucose 1-dehydrogenase, also known as glucose dehydrogenase (FAD)/Pseudomonas glucose dehydrogenase, is an enzyme that catalyzes the conversion of glucose and NAD(P) into NAD(P)H and gluconic acid, serving as a cofactor regeneration mechanism [1].

Nicotinamide-d4 is intended for use as an internal standard for the quantification of nicotinamide by GC- or LC-MS. Nicotinamide is an amide form of niacin, which is also known as vitamin B3, that can be biosynthesized in vivo or obtained through the diet. It is a precursor in the synthesis of the metabolic cofactor NAD+ and an inhibitor of sirtuin 1 (SIRT1; IC50 = <50 µM). Nicotinamide (10 µM) increases the activity of serine palmitoyltransferase (SPT) and the biosynthesis of ceramide, glucosylceramide, sphingomyelin, free fatty acids, and cholesterol in primary human keratinocytes. Nicotinamide (40 µM) induces apoptosis in SNU-398, SNU-739, and HepG2 hepatocellular carcinoma (HCC) cells, and it prevents the formation of neoplastic lesions in a diethylnitrosamine-induced mouse model of HCC. Unlike niacin, nicotinamide does not reduce plasma lipid levels or induce flushing.

CI-898 HCl is a lipophilic antifolate inhibitor of dihydrofolate reductase (DHFR). It has enhanced binding to DHFR in the presence of the cofactor NADPH. Cl-898 HCl inhibits cell growth and halts the cell cycle at the G1/S phase in L1210 mouse lymphocytic leukemia cells and is active against methotrexate-resistant cancer cell lines. It also enhances the activity of doxorubicin, cyclophosphamide, and 6-thioguanine (6-TG) in mice with advanced stage P338 leukemia.

Coenzyme A is an obligatory cofactor in all living cells synthesized from pantothenate (Vitamin B5), adenosine triphosphate (ATP), and cysteine.

Gamma-glutamylcysteine (TFA) ((γ-glutamylcysteine (TFA)), a crucial dipeptide in glutathione (GSH) synthesis and a vital cofactor for the enzyme glutathione peroxidase (GPx), significantly modulates inflammatory responses. It enhances the level of the anti-inflammatory cytokine IL-10, diminishes the concentrations of pro-inflammatory cytokines (TNF-α, IL-6, and IL-1β), and mitigates alterations in metalloproteinase activity in oligomeric Aβ40-treated astrocytes.

Flavin adenine dinucleotide (FAD) is a REDOX cofactor, a protein cogroup, involved in a variety of metabolic reactions.

Dermatan sulphate sodium, a glycosaminoglycan and thrombin inactivator, exhibits antithrombotic activity by selectively catalyzing the inactivation of thrombin via heparin cofactor II, without interaction with antithrombin III. This compound is noted for its high bioavailability and ability to reduce Bleomycin-induced pulmonary fibrosis damage [1] [2].

Folic acid disodium, an orally active disodium salt form of Folic acid, showcases an intrinsic dissolution rate (IDR) of 4.96·10^5 g/s [1]. It acts as a cofactor in single-carbon transfer reactions and has protective roles against neural tube defects, ischemic events, and cancer. However, an overload of Folic acid disodium can impair brain development during embryogenesis and encourage the growth of precancerous cells, whereas its deficiency results in megaloblastic anemia [2].

Pyrroloquinoline quinone (PQQ), as a well-known redox enzyme cofactor, PQQ can protect NS/PCs against glutamate toxicity associated with ROS-mediated mitochondrial pathway,

Uridine diphosphate glucuronic acid (UDP-GlcA) ammonium, formed through the enzymatic action of UDP-glucose dehydrogenase, serves as a crucial cofactor in sugar nucleotide biosynthesis. It acts as a pivotal precursor and a common substrate for C4-epimerases and decarboxylases, which generate UDP-galacturonic acid (UDP-GalA) and UDP-pentose, respectively. Additionally, as a glucuronic acid donor, UDP-GlcA ammonium is utilized in research for studying bilirubin conjugation within the endoplasmic recticulum [1].

Glucose dehydrogenase (GDH) is an oxidoreductase enzyme that facilitates the oxidation of β-D-glucose into β-D-glucono-1,5-lactone, while concurrently reducing cofactor NADP+ to NADPH, and to a lesser degree, NAD+ to NADH. It can utilize both NAD+ and NADP+ as cofactors and serves in the regeneration of NADH and NADPH [1] [2].

DL-Glyceraldehyde (Glyceric aldehyde) is produced from the action of the enzyme glyceraldehyde dehydrogenase, which converts glycerol to glyceraldehyde using NADP as a cofactor. When present at sufficiently high levels, DL-Glyceraldehyde can be a cytotoxin and a mutagen. A cytotoxin is a compound that kills cells. A mutagen is a compound that causes mutations in DNA. DL-Glyceraldehyde is a highly reactive compound that can modify and cross-link proteins. DL-Glyceraldehyde modified proteins appear to be cytotoxic, depress intracellular glutathione levels, and induce reactive oxygen species (ROS) production (PMID: 14981296 ). DL-Glyceraldehyde has been shown to cause chromosome damage to human cells in culture and is mutagenic in the Ames bacterial test.