Nitrogen-15 (¹⁵N)

Taurine-¹³C₂,¹⁵N is the ¹³C- and ¹⁵N- labeled Taurine. Taurine, a sulphur-containing amino acid and an organic osmolyte involved in cell volume regulation, provides a substrate for the formation of bile salts, and plays a role in the modulation of intracellular free calcium concentration. Taurine has the ability to activate autophagy in adipocytes.

L-Valine-¹³C₅,¹⁵N ((S)-Valine-¹³C₅,¹⁵) is the ¹³C- and ¹⁵N-labeled L-Valine (HY-N0717). L-Valine ((S)-Valine) is a nonlinear semiorganic material. L-Valine causes lipid peroxidation and accumulation of malondialdehyde (MDA), exhibits inhibitory activity against cyanobacteria. L-Valine inhibits multidrug-resistant bacteria through activation of PI3K/Akt signaling pathway and inhibition of arginase.

L-Methionine-¹⁵N is the ¹⁵N-labeled L-Methionine. L-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.

Guanine-¹⁵N₅ is ¹⁵N labeled Guanine (HY-Y1055). Guanine is one of the fundamental components of nucleic acids (DNA and RNA). Guanine is a purine derivative, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Guanine has the potential to serve as a large-capacity N pool. Guanine has cytotoxic, antinociceptive and neuroprotective effects.

L-Tryptophan-¹⁵N is the ¹⁵N-labeled L-Tryptophan. L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3[1].

L-Methionine-¹³C₅,¹⁵N is the ¹³C- and ¹⁵N-labeled L-Methionine. L-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.

L-Phenylalanine-¹³C₉,¹⁵N is the ¹³C- and ¹⁵N-labeled L-Phenylalanine. L-Phenylalanine ((S)-2-Amino-3-phenylpropionic acid) 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) (KB of 573 μM ) and non-NMDARs, respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals.

L-Phenylalanine-¹⁵N is the ¹⁵N-labeled L-Phenylalanine. L-Phenylalanine ((S)-2-Amino-3-phenylpropionic acid) 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) (KB of 573 μM ) and non-NMDARs, respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals.

ATP-¹³C₁₀,¹⁵N₅ (Adenosine 5'-triphosphate-ATP-¹³C₁₀,¹⁵N₅) dilithium is the ¹³C₁₀,¹⁵N₅-labeled ATP (HY-B2176). ATP is a central component of energy storage and metabolism in vivo. ATP provides the metabolic energy to drive metabolic pumps and serves as a coenzyme in cells. ATP is an important endogenous signaling molecule in immunity and inflammation. ATP can activate the NLRP3 inflammasome and induce IL-1β and chemokines secretion. ATP has anti-bacterial infection effects and can protect mice against bacterial infection in mice.

5-Aminolevulinic acid-¹³C₂,¹⁵N (5-ALA-¹³C₂,¹⁵N; δ-Aminolevulinic acid-¹³C₂,¹⁵N) is ¹³C- and ¹⁵N-labeled 5-Aminolevulinic acid (HY-W000450).

Orotic acid-¹³C,¹⁵N₂ (monohydrate) is the ¹³C and ¹⁵N labeled Orotic acid. Orotic acid (6-Carboxyuracil), a precursor in biosynthesis of pyrimidine nucleotides and RNA, is released from the mitochondrial dihydroorotate dehydrogenase (DHODH) for conversion to UMP by the cytoplasmic UMP synthase enzyme. Orotic acid is a marker for measurement in routine newborn screening for urea cycle disorders. Orotic acid can induce hepatic steatosis and hepatomegaly in rats.

Guanosine-¹³C₁₀,¹⁵N₅ is the ¹³C and ¹⁵N labeled Guanosine (HY-N0097). Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity.

L-Serine-¹⁵N is the ¹⁵N-labeled L-Serine. L-Serine ((-)-Serine; (S)-Serine), one of the so-called non-essential amino acids, plays a central role in cellular proliferation.

Pantothenic acid-¹³C₃,¹⁵N (hemicalcium) is the ¹³C-labeled and ¹⁵N-labeled D-Pantothenic acid. D-Pantothenic acid is an essential trace nutrient that functions as the obligate precursor of coenzyme A (CoA). D-Pantothenic acid plays key roles in myriad biological processes, including many that regulate carbohydrate, lipid, protein, and nucleic acid metabolism.

L-Aspartic acid-¹³C₄,¹⁵N is the ¹⁵N, ¹³C-labeled L-Aspartic acid (HY-N0666). L-Aspartic acid is a NMDA receptor agonist and acidic amino acid. L-Aspartic acid has no independent analgesic activity. L-Aspartic acid can antagonize the analgesic effects of D-Aspartic acid and Morphine. L-Aspartic acid regulates polymorph transformation, crystal growth/aggregation and nucleation processes of calcium carbonate, and can serve as a biomineralization template. L-Aspartic acid promotes burst firing of central neurons. L-Aspartic acid can be used in studies related to cerebral ischemia and epilepsy.

Adenosine 5'-diphosphate-¹⁵N₅ (Adenosine diphosphate-¹⁵N₅ dilithium) dilithium is ¹⁵N labeled Adenosine 5'-diphosphate (HY-W010918). Adenosine 5'-diphosphate (Adenosine diphosphate) is a nucleoside diphosphate. Adenosine 5'-diphosphate is the product of ATP dephosphorylation by ATPases. Adenosine 5'-diphosphate induces human platelet aggregation and inhibits stimulated adenylate cyclase by an action at P_2T-purinoceptors.

Uridine 5'-monophosphate-¹³C₉,¹⁵N₂ disodium is the ¹³C and ¹⁵N labeled Uridine 5'-monophosphate disodium salt (HY-W013175). Uridine 5'-monophosphate (5'-Uridylic acid) disodium salt is an orally active mitochondrial ATP-dependent potassium channel activator that has a protective effect on the heart. Uridine 5'-monophosphate disodium salt can promote the synthesis of CDP-choline and induce apoptosis in intestinal epithelial cells, which is beneficial for gut development and reduces diarrhea.

Inosine-¹⁵N₄ is the ¹⁵N labeled Inosine.

Glycine-¹³C₂,¹⁵N is the ¹³C- and ¹⁵N-labeled Glycine. Glycine is an inhibitory neurotransmitter in the CNS and also acts as a co-agonist along with glutamate, facilitating an excitatory potential at the glutaminergic N-methyl-D-aspartic acid (NMDA) receptors.

L-Asparagine-¹³C₄,¹⁵N₂ monohydrateis the ¹³C-labeled and ¹⁵N-labeled L-Asparagine monohydrate (HY-W017443). L-Asparagine monohydrate is an essential amino acid for leukemic cells and a substrate for L-Asparaginase. L-Asparaginase is a potent anti-leukemic enzyme that promotes asparagine (Asn) and glutamine (Gln) depletion and inhibits protein biosynthesis in lymphoblasts. Removal of L-asparagine from plasma by L-Asparaginase results in inhibition of RNA and DNA synthesis and subsequent apoptosis. L-Asparaginase has cell-killing ability in vitro and in vivo, and selectively inhibits the growth of cancer cells with low asparagine synthetase (AASNS) expression. L-Asparagine monohydrate can be used as a biomarker and sensor for the study of childhood acute lymphoblastic leukemia.