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Nitrogen-15 Labeled Compounds

Nitrogen-15 labeled compounds refer to compounds that are labeled with nitrogen-15, an isotope of nitrogen. Nitrogen-15 labeled compounds have been widely used in agriculture, medicine, biochemistry and other fields. For example, nitrogen-15 labeled nitrogen fertilizers can help scientists study the transformation, absorption and utilization of nitrogen fertilizers in the soil, thereby optimizing the application method of nitrogen fertilizers and increasing crop yields. They can also be used to study the metabolic process of drugs in the human body and the pathogenesis of diseases.

FilterHomeIsotope productsNitrogen-15 Labeled Compounds
  • 5-Fluorouracil-13C,15N2
    T368951189423-58-2
    5-Fluorouracil-13C,15N2 is intended for use as an internal standard for the quantification of 5-flurouracil by GC- or LC-MS. 5-Fluorouracil is a pyrimidine analog that irreversibly inhibits thymidylate synthase, blocking the synthesis of thymidine which is required for DNA synthesis. Intracellular metabolites of 5-fluorouracil exert cytotoxic effects by either inhibiting thymidylate synthetase, or through incorporation into RNA and DNA, ultimately initiating apoptosis.
    • $838
    35 days
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  • Zonisamide-13C2,15N
    T378471188265-58-8
    Zonisamide-13C2,15N is intended for use as an internal standard for the quantification of zonisamide by GC- or LC-MS. Zonisamide is an antiepileptic agent.1 It selectively inhibits the repeated firing of sodium channels (IC50 = 2 μg/ml) in mouse embryo spinal cord neurons and inhibits spontaneous channel firing when used at concentrations greater than 10 μg/ml.2 In rat cerebral cortex neurons, zonisamide (1-1,000 μM) inhibits T-type calcium channels with a maximum reduction of 60% of the calcium current.3 Zonisamide inhibits H. pylori recombinant carbonic anhydrase (CA) and the human CA isoforms I, II, and V with Ki values of 218, 56, 35, and 21 nM, respectively.4,5 In mice, it has anticonvulsant activity against maximal electroshock seizure (MES) and pentylenetetrazole-induced maximal, but not minimal, seizures (ED50s = 19.6, 9.3, and >500 mg/kg, respectively). Zonisamide (40 mg/kg, p.o.) prevents MPTP-induced decreases in the levels of dopamine , but not homovanillic acid or dihydroxyphenyl acetic acid , and increases MPTP-induced decreases in the dopamine turnover rate in mouse striatum in a model of Parkinson's disease.6 Formulations containing zonisamide have been used in the treatment of partial seizures in adults with epilepsy. |1. Masuda, Y., Ishizaki, M., and Shimizu, M. Zonisamide: Pharmacology and clinical efficacy in epilepsy. CNS Drug Rev. 4(4), 341-360 (1998).|2. Rock, D.M., Macdonald, R.L., and Taylor, C.P. Blockade of sustained repetitive action potentials in cultured spinal cord neurons by zonisamide (AD 810, CI 912), a novel anticonvulsant. Epilepsy Res. 3(2), 138-143 (1989).|3. Suzuki, S., Kawakami, K., Nishimura, S., et al. Zonisamide blocks T-type calcium channel in cultured neurons of rat cerebral cortex. Epilepsy Res. 12(1), 21-27 (1992).|4. Nishimori, I., Vullo, D., Minakuchi, T., et al. Carbonic anhydrase inhibitors: Cloning and sulfonamide inhibition studies of a carboxyterminal truncated α-carbonic anhydrase from Helicobacter pylori. Bioorg. Med. Chem. Lett. 16(8), 2182-2188 (2006).|5. De Simone, G., Di Fiore, A., Menchise, V., et al. Carbonic anhydrase inhibitors. Zonisamide is an effective inhibitor of the cytosolic isozyme II and mitochondrial isozyme V: Solution and X-ray crystallographic studies. Bioorg. Med. Chem. Lett. 15(9), 2315-2320 (2005).|6. Yabe, H., Choudhury, M.E., Kubo, M., et al. Zonisamide increases dopamine turnover in the striatum of mice and common marmosets treated with MPTP. J. Pharmacol. Sci. 110(1), 64-68 (2009).
    • $990
    35 days
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  • Lamivudine 13C,15N2
    T118141391052-30-4
    Lamivudine 13C,15N2, an impurity of Lamivudine (BCH-189), functions as an inhibitor of both HIV-1/2 reverse transcriptase and hepatitis B virus reverse transcriptase, classifying it as a nucleoside reverse transcriptase inhibitor (NRTIs).
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  • L-Thyroxine-13C9,15N
    T363831431868-11-9
    L-Thyroxine-13C9,15N is intended for use as an internal standard for the quantification of L-thyroxine by GC- or LC-MS. L-Thyroxine is a synthetic form of the thyroid hormone thyroxine. In vivo, L-thyroxine (0.9 and 2.7 μg) inhibits synthesis and release of thyrotropin induced by thyrotropin-releasing hormone from the anterior pituitary in mice. It also reverses decreases in levels of circulating thymic serum factor (FTS) and the number of T rosette-forming cells in an old age-induced mouse model of hypothyroidism. Formulations containing L-thyroxine have been used in the treatment of hypothyroidism.
    • $2,270
    35 days
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  • Zanamivir-13C,15N2
    T381181276528-62-1
    Zanamivir-13C,15N2is intended for use as an internal standard for the quantification of zanamivir by GC- or LC-MS. Zanamivir is a sialic acid analog that inhibits neuraminidase release of newly replicated influenza virus particles.1It has been shown to selectively inhibit the growth of influenza A and B viruses in plaque reduction assays with IC50values ranging from 5 to 14 nM and to directly inhibit influenza A and B virus neuraminidases with IC50values ranging from 0.6 to 7.9 nMin vitro. Intranasal zanamivir administration at 0.4 mg/kg twice daily reduces mortality and viral titers in lung homogenates of mice infected with influenza. 1.Elliott, M.Zanamivir: From drug design to the clinicPhilos. Trans. R. Soc. Lond. B Biol Sci.356(1416)1885-1893(2001)
    • $1,524
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  • Guanfacine-13C,15N3
    T355911189924-28-4
    Guanfacine-13C,15N3is intended for us as an internal standard for the quantification of guanfacine by GC- or LC-MS. Guanfacine is an α2-adrenergic receptor (α2-AR) agonist with Kivalues of 93, 1,380, and 3,890 nM for α2A-, α2B-, and α2C-ARs, respectively, in a radioligand binding assay.1It has EC50values of 52, 288, and 602 nM for α2A-, α2B-, and α2C-ARs, respectively, for stimulated [35S]GTPγS binding. It also binds to imidazoline receptor 1 (Ki= 19 nM in a radioligand binding assay).2Guanfacine (0.3-5 mg/kg) binds to adrenergic receptors in the central nervous system and lowers blood pressure in hypertensive rats in a dose-dependent manner.3It also improves spatial working memory deficits induced by hypobaric hypoxia in rats.4Formulations containing guanfacine are used in the treatment of high blood pressure and attention deficit hyperactivity disorder (ADHD). 1.Jasper, J.R., Lesnick, J.D., Chang, L.K., et al.Ligand efficacy and potency at recombinant α2 adrenergic receptors: Agonist-mediated [35S]GTPγS bindingBiochem. Pharmacol.55(7)1035-1043(1998) 2.Nikolic, K., Filipic, S., and Agbaba, D.QSAR study of imidazoline antihypertensive drugsBioorg. Med. Chem.16(15)7134-7140(2008) 3.Scholtysik, G.Pharmacology of guanfacineBr. J. Clin. Pharmacol.10(Suppl 1)21S-24S(1980) 4.Kauser, H., Sahu, S., Kumar, S., et al.Guanfacine is an effective countermeasure for hypobaric hypoxia-induced cognitive declineNeuroscience254110-119(2013)
    • $1,200
    35 days
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  • Cefazolin-13C2,15N
    T372502101505-58-0
    Cefazolin-13C2,15N is intended for use as an internal standard for the quantification of cefazolin by GC- or LC-MS. Cefazolin is a broad-spectrum cephalosporin antibiotic that is active in vitro against various Gram-positive and Gram-negative bacteria (MICs = 0.2-12.5 μg/ml). It also inhibits the growth of clinical isolates of S. aureus, E. coli, P. mirabilis, and K. pneumoniae (MICs = 0.1-25 μg/ml). In vivo, cefazolin protects against S. aureus, E. coli, and P. mirabilis infection in mice (ED50s = <0.09-1.78, 0.44-3.63, and 2.31-5.2 mg/animal, respectively). Formulations containing cefazolin have been used to treat a variety of bacterial infections.
    • $898
    35 days
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  • 2-Nitrobenzaldehyde semicarbazone 13C,15N2
    T40874760179-80-4
    2-Nitrobenzaldehyde semicarbazone (13C, 15N2) is utilized in the LC-MS/MS method for semicarbazide analysis.
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  • Roxadustat-13C-15N
    TMIH-0506
    Roxadustat-13C-15N is 13C and 15N labeled Roxadustat.
    • $685
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  • Vadadustat-13C2-15N
    TMIH-0591
    Vadadustat-13C2-15N is 13C and 15N labeled Vadadustat. Vadadustat has a CAS number of 1000025-07-9. Vadadustat is a novel, titratable, oral hypoxia-inducible factor prolyl hydroxylase (HIF-PH) inhibitor in development for the treatment of anemia.
    • $857
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  • Upadacitinib-15N-d2
    TMIJ-0267
    Upadacitinib-15N-d2 the 15N and deuterated compound of Upadacitinib. Upadacitinib has a CAS number of 1310726-60-3. Upadacitinib (ABT-494) is a selective Janus kinase (JAK) 1 inhibitor, which is being studied for the treatment of several autoimmune disorders in the IC50 of 43 nM.
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  • L-Valine-13C5-15N
    TMIJ-0381202407-30-5
    L-Valine-13C5-15N is the 13C and 15N labeled compound of L-Valine. L-Valine has a CAS number of 72-18-4. A branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.
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  • L-Glutamic acid-15N
    T3956521160-87-2
    L-Glutamic acid-15N is the 15N-labeled version of L-Glutamic acid, an excitatory neurotransmitter and an agonist at metabotropic, kainate, NMDA, and AMPA glutamate receptor subtypes. It directly activates the release of dopamine (DA) from dopaminergic terminals.
      7-10 days
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    • L-Tyrosine-13C9,15N
      T36384202407-26-9
      L-Tyrosine-13C9,15N is intended for use as an internal standard for the quantification of L-tyrosine by GC- or LC-MS. L-Tyrosine is a non-essential amino acid.1It is produced by hydroxylation of phenylalanine by phenylalanine hydroxylase but can also be obtained from dietary sources or degradation of endogenous proteins, resulting in L-tyrosine release.1,2L-Tyrosine is a precursor in the biosynthesis of catecholamine neurotransmitters, melanins, and thyroid hormones.3Plasma, skeletal muscle, and erythrocyte levels of L-tyrosine are decreased in patients with chronic kidney disease.1 1.Kopple, J.D.Phenylalanine and tyrosine metabolism in chronic kidney failureJ. Nutr.137(6 Suppl 1)1586S-1590S(2007) 2.Webster, D., and Wildgoose, J.Tyrosine supplementation for phenylketonuriaCochrane DB Syst. Rev.2013(6)CD001507(2013) 3.Slominski, A., and Paus, R.Towards defining receptors for L-tyrosine and L-DOPAMol. Cell Endocrinol.99(2)C7-C11(1994)
      • $58
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    • Riluzole-13C,15N2
      T376081215552-03-6
      Riluzole-13C,15N2 is intended for use as an internal standard for the quantification of riluzole by GC- or LC-MS. Riluzole is a benzothiazole derivative with anti-excitotoxic effects that acts by blocking the presynaptic release of glutamate, indirectly antagonizing glutamate receptors, and inactivating neuronal voltage-gated Na+ channels (ED50 = 2.3 μM). Riluzole suppresses glutamate-induced seizures in rats at an ED50 value of 3.2 mg/kg and displays neuroprotective effects in hypoxic animals at an ED50 value of 4 mg/kg. Formulations containing riluzole have been explored as therapeutics for slowing disease progression of amyotrophic lateral sclerosis.
      • $891
      35 days
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    • Benzamide-15N
      T4039431656-62-9
      Benzamide-15N (NSC-3114-15N) is a 15N-labeled Benzamide. Benzamide inhibits poly(ADP-ribose) polymerase (PARP).
        7-10 days
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      • Gemcitabine EP Impurity C-13C-15N2
        TMIJ-01901233921-75-9
        Gemcitabine EP Impurity C-13C-15N2 is the 13C and 15N labeled compound of Gemcitabine EP Impurity C.
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      • L-Phenylalanine-15N
        T4037629700-34-3
        L-Phenylalanine-15N ((S)-2-Amino-3-phenylpropionic acid-15N) is the 15N-labeled L-Phenylalanine. L-Phenylalanine is an essential amino acid isolated from Escherichia coli . L-Phenylalanine is a α2δ subunit of voltage-dependent Ca + channels antagonist with a K i of 980 nM. L-phenylalanine is a competitive antagonist for the glycine- and glutamate-binding sites of N-methyl-D-aspartate receptors (NMDARs) ( K B of 573 μM ) and non-NMDARs , respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals.
        • $40
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      • Roxadustat-13C2-15N
        TMIH-0507
        Roxadustat-13C2-15N is 13C and 15N labeled Roxadustat.
        • $857
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      • Semicarbazide-13C-15N2 Hydrochloride
        TMIJ-00101173020-16-0
        Semicarbazide-13C-15N2 Hydrochloride is the 13C and 15N labeled compound of Semicarbazide Hydrochloride. Semicarbazide Hydrochloride has a CAS number of 563-41-7. Semicarbazide is Snow white crystals and used as a reagent for ketones and aldehydes with which it affords crystalline compounds having characteristic melting points.
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      • Glutathione-(glyucine-13C2-15N) Trifluoroacetate
        TMIJ-0165
        Glutathione-(glyucine-13C2-15N) Trifluoroacetate is the 13C and 15N labeled compound of Glutathione Trifluoroacetate.
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      • Cefdinir-13C-15N2
        TMIJ-0170
        Cefdinir-13C-15N2 is the 13C and 15N labeled compound of Cefdinir. Cefdinir has a CAS number of 91832-40-5. Cefdinir is a semi-synthetic, broad-spectrum antibiotic in the third generation of the cephalosporin class, proven effective for common bacterial infections of the ear, sinus, throat and skin.
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      • Tranexamic Acid-13C2-15N
        TMIJ-03111292837-95-6
        Tranexamic Acid-13C2-15N is the 13C and 15N labeled compound of Tranexamic Acid. Tranexamic Acid has a CAS number of 1197-18-8. Tranexamic acid is an Antifibrinolytic Agent. The physiologic effect of tranexamic acid is by means of Decreased Fibrinolysis.
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      • L-Arginine-15N4 hydrochloride
        T39441204633-95-4
        L-Arginine-15N4 ((S)-(+)-Arginine-15N4) hydrochloride, the 15N-labeled variant of L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride), serves as the nitrogen donor in the synthesis of nitric oxide. This potent vasodilator is crucial, especially during a sickle cell crisis where its levels are notably diminished.
          7-10 days
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        • L-Lysine-13C6-15N2 Hydrochloride
          TMIJ-03801200447-00-2
          L-Lysine-13C6-15N2 Hydrochloride is the 13C and 15N labeled compound of L-Lysine Hydrochloride. L-Lysine Hydrochloride has a CAS number of 657-27-2. L-lysine hydrochloride is an essential amino acid for humans with various benefits including treating herpes, increasing calcium absorption, reducing diabetes-related illnesses and improving gut health.
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        • Glyphosate-13C2-15N
          TMIJ-04481185107-63-4
          Glyphosate-13C2-15N is the 13C and 15N labeled compound of Glyphosate. Glyphosate has a CAS number of 1071-83-6. Glyphosate is an herbicide. It also is a possible carcinogen to humans.
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        • Uric acid-13C-15N2
          TMID-0122
          Uric acid-13C-15N2 is the 13C and 15N labeled compound of Uric acid. Uric acid has a CAS number of 69-93-2. Uric acid is an oxidation product of oxypurines such as XANTHINE and HYPOXANTHINE. It is the final oxidation product of purine catabolism in humans and primates, whereas in most other mammals URATE OXIDASE further oxidizes it to ALLANTOIN.
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        • 3,5-Dinitrosalicylhydrazide-15N2
          TMIJ-05171346598-09-1
          3,5-Dinitrosalicylhydrazide-15N2 the 15N and deuterated compound of 3,5-Dinitrosalicylhydrazide.
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