1. Signaling Pathways
  2. Metabolic Enzyme/Protease
  3. Endogenous Metabolite

Endogenous Metabolite

Endogenous metabolites refer to the collective set of small-molecule chemical substances present within organelles, cells, organs, biological fluids, or entire organisms; their molecular weights are typically less than 1500 Da. These endogenous metabolites—including lipids, amino acids, short peptides, nucleic acids, carbohydrates, alcohols, and organic acids—not only participate in signal transduction governing genomic function but also receive upstream signals from the environment, thereby bridging the interrelationships among genotype, environment, and phenotype. Based on their biological functions, microbial endogenous metabolites can be broadly classified into two categories: primary metabolites and secondary metabolites. Primary metabolites are the core molecules essential for supporting microbial growth and proliferation; they serve to provide energy to the microbes or act as precursors and cofactors for the synthesis of biological macromolecules. In contrast, microbial secondary metabolites are a class of low-molecular-weight products that are not strictly essential for microbial growth. Nevertheless, microbial secondary metabolites include numerous substances—such as antibiotics, anti-tumor agents, and cholesterol-lowering agents—that are of critical importance to human health[1][2][3]. Furthermore, the metabolome of a biological organism is influenced by a variety of endogenous factors, including age, sex, body composition, genetic background, and underlying pathological states. The small-molecule metabolites within an organism are diverse and highly distinct; their levels are typically subject to the synergistic regulation of a vast array of enzymes and transport proteins, undergoing processes of synthesis, transformation, degradation, and compartmentalized distribution. Metabolomics research based on endogenous metabolites has been widely applied in the fields of metabolic disorders, neurodegenerative diseases, cancer, cardiovascular diseases, and infectious diseases, where these metabolites hold potential utility as biomarkers or therapeutic targets[1][2][3].

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-32351A
    Calcifediol monohydrate
    99.98%
    Calcifediol monohydrate (25-hydroxy Vitamin D3 monohydrate), is an effective VDR ligand and VD supplement. Calcifediol is a prohormone of the vitamin D endocrine system (VDES) and is hydroxylated in the liver to produce the active form, calcitriol. Calcifediol can rapidly increase serum VD levels.
    Calcifediol monohydrate
  • HY-128434
    L-​Leucyl-​L-​alanine
    98.0%
    L-Leucyl-L-alanine is a simple aliphatic dipeptide composed of L-leucine and L-alanine.
    L-​Leucyl-​L-​alanine
  • HY-B2219S2
    Stearic acid-13C18
    99.2%
    Stearic acid-13C18is the 13C-labeled Stearic acid. Stearic acid is a long chain dietary saturated fatty acid which exists in many animal and vegetable fats and oils.
    Stearic acid-<sup>13</sup>C<sub>18</sub>
  • HY-Y1311S
    Malic acid-d3
    99.90%
    Malic acid-d3 is the deuterium labeled Malic acid. Malic acid (Hydroxybutanedioic acid) is a dicarboxylic acid that is naturally found in fruits such as apples and pears. It plays a role in many sour or tart foods.
    Malic acid-d<sub>3</sub>
  • HY-113440
    5-Methoxytryptophol
    99.95%
    5-Methoxytryptophol is a 5-methoxyindole alcohol structurally homologous to Melatonin (HY-B0075). It is secreted by the mammalian pineal gland and exhibits an inverse circadian rhythm. 5-Methoxytryptophol regulates bone metabolism by activating the ERK1/2 pathway. It reduces the levels of pro-inflammatory cytokines TNF-α and IL-1β, as well as proteolytic enzymes MMP-1 and MMP-2, in serum and dental pulp tissues, thereby ameliorating acute pulpitis. 5-Methoxytryptophol induces rapid sleep in mice, while high doses cause respiratory depression and death. 5-Methoxytryptophol. 5-Methoxytryptophol can be used in studies related to acute pulpitis, hypnosis, and bone metabolism.
    5-Methoxytryptophol
  • HY-W704966
    2-Stearoyl-sn-glycero-3-phosphocholine
    2-Stearoyl-sn-glycero-3-PC is a lysophospholipid that contains stearic acid (HY-B2219) at the sn-2 position. It has been found in rabbit myocardium.
    2-Stearoyl-sn-glycero-3-phosphocholine
  • HY-W105518
    L-Carnitine tartrate
    98.0%
    L-Carnitine tartrate is a highly polar, small zwitterion. L-Carnitine tartrate is an essential co-factor for the mitochondrial β-oxidation pathway. L-Carnitine tartrate functions to transport long chain fatty acyl-CoAs into the mitochondria for degradation by β-oxidation. L-Carnitine tartrate is an antioxidant. L-Carnitine tartrate can ameliorate metabolic imbalances in many inborn errors of metabolism[3].
    L-Carnitine tartrate
  • HY-N2582
    Calcium Phytate
    98.0%
    Calcium phytate (Phytin) is an insoluble phosphorus-containing compound widely present in plant-based foods such as cereals and legumes. Calcium phytate can be found in feces and can alleviate lead poisoning.
    Calcium Phytate
  • HY-B0166S6
    L-Ascorbic acid-d2
    99.90%
    L-Ascorbic acid-d2 is the deuterium labeled L-Ascorbic acid. L-Ascorbic acid (L-Ascorbate), an electron donor, is an endogenous antioxidant agent. L-Ascorbic acid inhibits selectively Cav3.2 channels with an IC50 of 6.5 μM. L-Ascorbic acid is also a colla
    L-Ascorbic acid-d<sub>2</sub>
  • HY-W008270
    2(5H)-Furanone
    99.94%
    2(5H)-Furanone (γ-Crotonolactone) is an endogenous metabolite. 2(5H)-Furanone mimics N-acyl homoserine lactone signals, occupies the binding site of LuxR homologs, and interferes with quorum sensing-mediated gene regulation. 2(5H)-Furanone inhibits quorum sensing mediated by AHLs with different acyl chain lengths. 2(5H)-Furanone inhibits biofilm formation of environmental Aeromonas hydrophila strains on polystyrene plates. 2(5H)-Furanone suppresses spike-and-wave discharges in a rat model of generalized absence seizures and exhibits selective activity against absence seizures. 2(5H)-Furanone can be used in studies related to bacteria infections and generalized absence seizures.
    2(5H)-Furanone
  • HY-Y1069S
    (S)-Malic acid-d3
    99.64%
    (S)-Malic acid-d3 is the deuterium labeled (S)-Malic acid. (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive.
    (S)-Malic acid-d<sub>3</sub>
  • HY-B0158R
    Cytidine (Standard)
    Cytidine (Standard) is the analytical standard of Cytidine. This product is intended for research and analytical applications. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function. In Vivo:Cytidine decreases glutamate/glutamine levels and induces earlier improvement of depressive symptoms.
    Cytidine (Standard)
  • HY-113083
    Acetaminophen glucuronide
    99.96%
    Acetaminophen glucuronide (APAP-glu) is an inactive glucuronide metabolite of Acetaminophen (HY-66005). Acetaminophen is a selective cyclooxygenase-2 (COX-2) inhibitor and a potent hepatic N-acetyltransferase 2 (NAT2) inhibitor.
    Acetaminophen glucuronide
  • HY-N7719
    Oosporein
    99.16%
    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.
    Oosporein
  • HY-124124S
    N-Methylnicotinamide-d4
    98.23%
    N-Methylnicotinamide-d4 is the deuterium labeled N-Methylnicotinamide (HY-124124). N-Methylnicotinamide is an endogenous metabolite with antithrombotic effect. N-Methylnicotinamide via production/release of prostacyclin inhibits arterial thrombosis development. N-Methylnicotinamide is also the N-methylation product from nicotinamide catalyzed by N-methyltransferase within nicotinate and nicotinamide metabolism pathway.
    N-Methylnicotinamide-d<sub>4</sub>
  • HY-116374A
    Glycolithocholic acid sodium
    98.0%
    Glycolithocholic acid (Lithocholylglycine) sodium is the sodium salt of Glycolithocholic acid. Glycolithocholic acid is a glycine-conjugated secondary bile acid. Glycolithocholic acid can be used to diagnose ulcerative colitis (UC), non-alcoholic steatohepatitis (NASH) and primary sclerosing cholangitis (PSC).
    Glycolithocholic acid sodium
  • HY-Y0378
    D-Leucine
    98.0%
    D-Leucine is a more potent anti-seizure agent than L-leucine. D-leucine potently terminates seizures even after the onset of seizure activity. D-leucine, but not L-leucine, reduces long-term potentiation but had no effect on basal synaptic transmission in vitro.
    D-Leucine
  • HY-W010378
    D-Asparagine
    98.0%
    D-Asparagine (H-D-Asn-OH) acts as a competitive inhibitor of L-asparagine hydrolysis, with a Ki value of 0.24 mM. D-Asparagine serves as a nitrogen source for yeast strains. D-Asparagine is a good substrate for external yeast asparaginase but a poor substrate for internal yeast asparaginase.
    D-Asparagine
  • HY-B2132R
    Tryptamine (Standard)
    Tryptamine (Standard) is the analytical standard of Tryptamine. This product is intended for research and analytical applications. Tryptamine is a monoamine alkaloid, similar to other trace amines, is believed to play a role as a neuromodulator or neurotransmitter.
    Tryptamine (Standard)
  • HY-P5069A
    Glutathione diethyl ester TFA
    Glutathione diethyl ester (TFA) is a delivery agent for glutathione monoester, and thus for glutathione, in human cells and therefore could serve to decrease oxidative stress and toxicity.
    Glutathione diethyl ester TFA
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