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Cysteine (Standard)

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28

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1

Biochemical Assay Reagents

22

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Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-Y0337R
    L-Cysteine (Standard)

    Cysteine (Standard)

    		 Reference Standards Endogenous Metabolite Metabolic Disease Cancer
    L-Cysteine (Standard) is the analytical standard of L-Cysteine. This product is intended for research and analytical applications. L-Cysteine is a conditionally essential amino acid, which acts as a precursor for biologically active molecules such as hydrogen sulphide (H2S), glutathione and taurine. L-Cysteine suppresses ghrelin and reduces appetite in rodents and humans .
    L-Cysteine (Standard)
  • HY-W016715R
    L-Cysteine hydrochloride hydrate (Standard)

    		Reference Standards Endogenous Metabolite Metabolic Disease
    L-Cysteine (hydrochloride hydrate) (Standard) is the analytical standard of L-Cysteine (hydrochloride hydrate). This product is intended for research and analytical applications. L-Cysteine hydrochloride hydrate is a conditionally essential amino acid, which acts as a precursor for biologically active molecules such as hydrogen sulphide (H2S), glutathione and taurine. L-Cysteine hydrochloride hydrate suppresses ghrelin and reduces appetite in rodents and humans .
    L-Cysteine hydrochloride hydrate (Standard)
  • HY-W018555R
    D-Cysteine (Standard)

    		Reference Standards Endogenous Metabolite Bacterial Infection Neurological Disease
    D-Cysteine (Standard) is the analytical standard of D-Cysteine. This product is intended for research and analytical applications. D-Cysteine, the D-isomer of cysteine, is an orally active antibacterial agent and a regulator of neural progenitor cell proliferation. D-Cysteine can inhibit Escherichia coli, Streptococcus mutans, and Streptococcus sanguinis. The no-observed-adverse-effect level of D-Cysteine in rats should be less than 500 mg/kg/day[1][2][3][4].
    D-Cysteine (Standard)
  • HY-Y0337AR
    L-Cysteine hydrochloride (Standard)

    		Reference Standards Endogenous Metabolite Metabolic Disease Cancer
    L-Cysteine (hydrochloride) (Standard) is the analytical standard of L-Cysteine (hydrochloride). This product is intended for research and analytical applications. L-Cysteine hydrochloride is an orally active conditionally essential amino acid, which acts as a precursor for biologically active molecules such as hydrogen sulphide (H2S), glutathione and taurine. L-Cysteine hydrochloride suppresses ghrelin and reduces appetite in rodents. L-Cysteine hydrochloride inhibits Aspergillus flavus growth and AFB synthesis by disrupting cell structure and antioxidant system balance. L-Cysteine hydrochloride enhances relaxant responses of rat aortic rings to NO and reduces responses to endothelium-derived relaxing factor (EDRF) [4].
    L-Cysteine hydrochloride (Standard)
  • HY-B2188R
    S-Methyl-L-cysteine (Standard)

    		Reactive Oxygen Species (ROS) Neurological Disease Metabolic Disease
    S-Methyl-L-cysteine (Standard) is the analytical standard of S-Methyl-L-cysteine. This product is intended for research and analytical applications. S-Methyl-L-cysteine is a natural product that acts as a substrate in the catalytic antioxidant system mediated by methionine sulfoxide reductase A (MSRA), with antioxidative, neuroprotective, and anti-obesity activities.
    S-Methyl-L-cysteine (Standard)
  • HY-45609R
    L-Cysteine S-sulfate sodium hydrate (Standard)

    		iGluR Endogenous Metabolite Neurological Disease
    L-Cysteine S-sulfate (sodium hydrate) (Standard) is the analytical standard of L-Cysteine S-sulfate (sodium hydrate). This product is intended for research and analytical applications. L-Cysteine S-sulfate sodium hydrate is a potent N-methyl-d-aspartate (NMDA) glutamatergic receptors agonist. L-Cysteine S-sulfate sodium hydrate is the substrate for cystine lyase, it can be used in mass spectrometry operations .
    L-Cysteine S-sulfate sodium hydrate (Standard)
  • HY-W013573R
    S-Allyl-L-cysteine (Standard)

    		Reference Standards Apoptosis Neurological Disease Metabolic Disease Inflammation/Immunology Cancer
    S-Allyl-L-cysteine (Standard) is the analytical standard of S-Allyl-L-cysteine. This product is intended for research and analytical applications. S-Allyl-L-cysteine, one of the organosulfur compounds found in AGE, possess various biological effects including neurotrophic activity, anti-cancer activity, anti-inflammatory activity.
    S-Allyl-L-cysteine (Standard)
  • HY-136386R
    N-Acetyl-D-cysteine (Standard)

    		Reference Standards Reactive Oxygen Species (ROS) Others
    N-Acetyl-D-cysteine (Standard) is the analytical standard of N-Acetyl-D-cysteine. This product is intended for research and analytical applications. N-Acetyl-D-cysteine has antioxidant activities and scavenges ROS through the reaction with its thiol group, but cannot enter the glutathione metabolic pathway .
    N-Acetyl-D-cysteine (Standard)
  • HY-111827R
    S-1-Propenyl-L-cysteine (Standard)

    		Histamine Receptor Cardiovascular Disease Others Metabolic Disease Inflammation/Immunology
    S-1-Propenyl-L-cysteine (Standard) is the analytical standard of S-1-Propenyl-L-cysteine. This product is intended for research and analytical applications. S-1-Propenyl-L-cysteine is a stereoisomer of S-allyl-l-cysteine, extracted from garlic, with immunomodulatory effects and reduces blood pressure in a hypertensive animal model . S-1-Propenyl-L-cysteine exhibits antioxidative efficacy through a NO-dependent BACH1 signaling pathway . S-1-Propenyl-L-cysteine is orally active.
    S-1-Propenyl-L-cysteine (Standard)
  • HY-121765R
    Dacisteine (Standard)

    N,S-Diacetyl-L-Cysteine (Standard)

    		 Reference Standards Endogenous Metabolite Metabolic Disease
    Dacisteine (Standard) is the analytical standard of Dacisteine. This product is intended for research and analytical applications. Dacisteine (N,S-Diacetyl-L-cysteine) is a cysteine derivative and displays a less New Delhi metallo-beta-lactamase-1 (NDM-1) inhibitor with an IC50 value of 1000 μM . Dacisteine can be used for the treatment of cardiovascular and cerebrovascular diseases caused by platelet aggregation .
    Dacisteine (Standard)
  • HY-B0215R
    Acetylcysteine (Standard)

    N-AcetylCysteine (Standard); N-Acetyl-L-Cysteine (Standard); NAC (Standard)

    		 Reference Standards Reactive Oxygen Species (ROS) Endogenous Metabolite Apoptosis Ferroptosis Influenza Virus Disulfidptosis Infection Neurological Disease Cancer
    Acetylcysteine (Standard) is the analytical standard of Acetylcysteine. This product is intended for research and analytical applications. Acetylcysteine (N-Acetylcysteine) is a mucolytic agent which reduces the thickness of the mucus. Acetylcysteine is a ROS inhibitor . Acetylcysteine is a cysteine precursor, prevents hemin-induced ferroptosis by neutralizing toxic lipids generated by arachidonate-dependent activity of 5-lipoxygenases . Acetylcysteine induces cell apoptosis . Acetylcysteine also has anti-influenza virus activities . In addition, Acetylcysteine is the most stable form of cysteine during drug delivery and can be used in disulfidptosis studies .
    Acetylcysteine (Standard)
  • HY-114245R
    Se-Methylselenocysteine (Standard)

    MethylselenoCysteine (Standard); Se-Methylseleno-L-Cysteine (Standard)

    		 Reference Standards Apoptosis Endogenous Metabolite Beta-secretase Cancer
    Risedronic acid (Standard) is the analytical standard of Risedronic acid. This product is intended for research and analytical applications. 0
    Se-Methylselenocysteine (Standard)
  • HY-132242R
    DL-Sulforaphane N-acetyl-L-cysteine (Standard)

    SFN-NAC (Standard)

    		 Reference Standards HDAC Apoptosis Drug Metabolite Cancer
    Pipemidic acid (trihydrate) (Standard) is the analytical standard of Pipemidic acid (trihydrate). This product is intended for research and analytical applications. Pipemidic acid trihydrate, a derivative of Piromidic acid, is an antibacterial agent. Pipemidic acid trihydrate inhibits DNA gyrase. Pipemidic acid trihydrate is active against gram-negative bacteria including Pseudomonas aeruginosa as well as some gram-positive bacteria. Pipemidic acid trihydrate can be used for the research of intestinal, urinary, and biliary tract infections .
    DL-Sulforaphane N-acetyl-L-cysteine (Standard)
  • HY-101409R
    O-Acetylserine (Standard)

    O-Acetyl-L-serine (Standard)

    		 Reference Standards Endogenous Metabolite Others
    O-Acetylserine (Standard) is the analytical standard of O-Acetylserine. This product is intended for research and analytical applications. O-Acetylserine (O-Acetyl-L-serine) is an intermediate in the biosynthesis of the amino acid cysteine in bacteria and plants.
    O-Acetylserine (Standard)
  • HY-100803R
    Hypotaurine (Standard)

    2-Aminoethanesulfinic acid (Standard)

    		 Reference Standards Endogenous Metabolite Neurological Disease
    Hypotaurine (Standard) is the analytical standard of Hypotaurine. This product is intended for research and analytical applications. Hypotaurine (2-aminoethanesulfinic acid), an intermediate in taurine biosynthesis from cysteine in astrocytes, is an endogenous inhibitory amino acid of the glycine receptor. Antioxidant[1].
    Hypotaurine (Standard)
  • HY-34477R
    2-Iodoacetamide (Standard)

    		DNA Alkylator/Crosslinker Others
    2-Iodoacetamide (Standard) is the analytical standard of 2-Iodoacetamide. This product is intended for research and analytical applications. 2-Iodoacetamide (Iodoacetamide), an alkylating agent, is a commonly used agent for alkylation of cysteine during sample preparation for proteomics .
    2-Iodoacetamide (Standard)
  • HY-100229R
    Aloxistatin (Standard)

    E64d (Standard); E64c ethyl ester (Standard)

    		 Reference Standards Cathepsin SARS-CoV Neurological Disease
    Aloxistatin (Standard) is the analytical standard of Aloxistatin. This product is intended for research and analytical applications. Aloxistatin (E64d) is a cell-permeable and irreversible broad-spectrum cysteine protease inhibitor. Aloxistatin (E64d) exhibits entry-blocking effect for MERS-CoV.
    Aloxistatin (Standard)
  • HY-134222AR
    N-Acetylserine (Standard)

    		Endogenous Metabolite Others
    N-Acetylserine (Standard) is the analytical standard of N-Acetylserine. This product is intended for research and analytical applications. N-Acetylserine (N-Acetyl-L-serine) can bind to CysB apoprotein. N-acetylserine is the physiological inducer of cysteine biosynthesis. N-Acetylserine can stimulate in vitro cysJIH transcription .
    N-Acetylserine (Standard)
  • HY-113402R
    Gamma-glutamylcysteine (Standard)

    γ-Glu-Cys (Standard)

    		 Reference Standards Endogenous Metabolite Inflammation/Immunology
    Gamma-glutamylcysteine (Standard) is the analytical standard of Gamma-glutamylcysteine. This product is intended for research and analytical applications. Gamma-glutamylcysteine (γ-Glutamylcysteine), a dipeptide containing cysteine and glutamic acid, is a precursor to glutathione (GSH). Gamma-glutamylcysteine is a cofactor for glutathione peroxidase (GPx) to increase GSH levels .
    Gamma-glutamylcysteine (Standard)
  • HY-19528R
    SAH (Standard)

    SAH (S-AdenosylhomoCysteine) (Standard)

    		 Reference Standards Endogenous Metabolite Metabolic Disease
    SAH (Standard) is the analytical standard of SAH. This product is intended for research and analytical applications. SAH (S-Adenosylhomocysteine) is an amino acid derivative and a modulartor in several metabolic pathways. It is an intermediate in the synthesis of cysteine and adenosine . SAH is an inhibitor for METTL3-METTL14 heterodimer complex (METTL3-14) with an IC50 of 0.9 μM .
    SAH (Standard)
  • HY-N0191R
    Andrographolide (Standard)

    Andrographis (Standard)

    		 Reference Standards NF-κB SARS-CoV Influenza Virus Autophagy Parasite Infection Inflammation/Immunology Cancer
    Andrographolide (Standard) is the analytical standard of Andrographolide. This product is intended for research and analytical applications. Andrographolide is a NF-κB inhibitor, which inhibits NF-κB activation through covalent modification of a cysteine residue on p50 in endothelial cells without affecting IκBα degradation or p50/p65 nuclear translocation. Andrographolide has antiviral effects.
    Andrographolide (Standard)
  • HY-18234AR
    Leupeptin hemisulfate (Standard)

    		Reference Standards Cathepsin Ser/Thr Protease Virus Protease Infection Inflammation/Immunology
    Leupeptin (hemisulfate) (Standard) is the analytical standard of Leupeptin (hemisulfate). This product is intended for research and analytical applications. Leupeptin hemisulfate is a broad-spectrum, membrane-permeable protease inhibitor. Leupeptin hemisulfate potently inhibits serine, cysteine and threonine proteases. Leupeptin hemisulfate inhibits Mpro (the main protease of SARS-CoV-2) and also has anti-inflammatory activity[1][2][3].
    Leupeptin hemisulfate (Standard)
  • HY-125773R
    β-cyano-L-Alanine (Standard)

    		Endogenous Metabolite Neurological Disease
    β-cyano-L-Alanine (Standard) is the analytical standard of β-cyano-L-Alanine. This product is intended for research and analytical applications. β-cyano-L-Alanine (Beta-cyano-l-alanine), a nitrile of widespread occurrence in higher plants, is enzymatically produced by cyanoalanine synthase from cyanide and cysteine as substrates . β-cyano-L-Alanine abolishes the protective effect of ethanol on cerebral ischemia/reperfusion (I/R) injury .
    β-cyano-L-Alanine (Standard)
  • HY-138540R
    1-Dodecylimidazole (Standard)

    		Fungal Cancer
    1-Dodecylimidazole (Standard) is the analytical standard of 1-Dodecylimidazole. This product is intended for research and analytical applications. 1-Dodecylimidazole (N-Dodecylimidazole) is a lysosomotropic detergent and a cytotoxic agent. 1-Dodecylimidazole causes cell death by its acid-dependent accumulation in lysosomes, disruption of the lysosomal membrane, and releaseof cysteine proteases into the cytoplasm. 1-Dodecylimidazole has hypocholesterolaemic activity and broad-spectrum antifungal activity .
    1-Dodecylimidazole (Standard)
  • HY-13509R
    CCG-50014 (Standard)

    		RGS Protein Inflammation/Immunology
    CCG-50014 (Standard) is the analytical standard of CCG-50014. This product is intended for research and analytical applications. CCG-50014 is the most potent against the regulator of G-protein signaling protein type 4 (RGS4) (IC50 =30 nM) and is >20-fold selective for RGS4 over other RGS proteins. CCG-50014 binds covalently to the RGS, forming an adduct on two cysteine residues located in an allosteric regulatory site . CCG50014, reduces nociceptive responses and enhances opioid-mediated analgesic effects in the mouse formalin test .
    CCG-50014 (Standard)
  • HY-N0005R
    Curcumin (Standard)

    Diferuloylmethane (Standard); Natural Yellow 3 (Standard); Turmeric yellow (Standard)

    		 Reference Standards Histone Acetyltransferase Epigenetic Reader Domain Keap1-Nrf2 Autophagy Mitophagy Influenza Virus Ferroptosis Infection Neurological Disease Inflammation/Immunology Cancer
    Curcumin (Standard) is the analytical standard of Curcumin (HY-N0005). This product is intended for research and analytical applications. Curcumin (Diferuloylmethane), a natural phenolic compound, is a p300/CREB-binding protein-specific inhibitor of acetyltransferase, represses the acetylation of histone/nonhistone proteins and histone acetyltransferase-dependent chromatin transcription. Curcumin is a photosensitizer against microorganisms. Curcumin shows inhibitory effects on NF-κB and MAPKs, and has diverse pharmacologic effects including anti-inflammatory, antioxidant, antiproliferative and antiangiogenic activities. Curcumin induces stabilization of Nrf2 protein through Keap1 cysteine modification.
    Curcumin (Standard)
  • HY-114796
    tHGA

    		Lipoxygenase Inflammation/Immunology
    tHGA is a compound with anti-inflammatory activity and has the activity to inhibit soybean 15-LOX. tHGA showed significant inhibitory effects in experiments on human leukocytes, with an IC50 value of 0.42 μM, which is close to the effect of commonly used standard NDGA. tHGA concentration-dependently inhibits the synthesis of 5-LOX products, especially the cysteine leukotriene LTC(4), with an IC50 value of 1.80 μM. and showed no cytotoxicity. The anti-inflammatory effects of tHGA do not appear to be through redox or metal chelation mechanisms, as the compound was negative in these bioactivity tests. tHGA works through a dual LOX/COX inhibition mechanism and has higher selectivity for 5-LOX and COX-2, with an IC50 value of 0.40 μM .
    tHGA
  • HY-N0394R
    L-Cystine (Standard)

    		Reference Standards Endogenous Metabolite Ferroptosis ROS Kinase Keap1-Nrf2 Metabolic Disease Inflammation/Immunology Cancer
    L-Cystine (Standard) is the analytical standard of L-Cystine. This product is intended for research and analytical applications. L-Cystine, the extracellular form of L-Cysteine (HY-Y0337), is a nutritionally dispensable semiessential sulfur-containing amino acid, occurring in proteins of plants and animals. L-Cystine induces Nrf2 protein elevation in a Keap1 (HY-P75897)-dependent manner and activates Nrf2 transcription factor. L-cystine can elicit cytoprotection by reducing ROS generation and protecting against oxidant- or doxorubicin-induced apoptosis. The reduced reabsorption of L-Cystine in renal tubules and its poor solubility in urine are the important causes of cystine precipitation and cystine crystal formation eventually leading to kidney stones. L-Cystine combined with L-theanine (HY-15121) enhances the production of antigen-specific IgG by increasing glutathione (GSH) levels and T helper 2 (Th2) mediated responses in mice. L-Cystine is promising for research of cystinuria and cystinosis
    L-Cystine (Standard)

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