Newborn Screening

L-Lysine-¹³C₆,¹⁵N₂ (dihydrochloride) is a ¹⁵N-labeled and ¹³C-labled L-Lysine dihydrochloride.

L-Tryptophan-d₃ is the deuterium labeled L-Tryptophan. L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3.

L-Cysteine-¹³C₃ is the ¹³C-labeled L-Cysteine. 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-Serine-¹³C₃,¹⁵N is the ¹³C- and 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.

p-Tyramine-d₄ (hydrochloride) is the deuterium labeled Tyramine hydrochloride. Tyramine hydrochloride is an amino acid that helps regulate blood pressure. Tyramine hydrochloride occurs naturally in the body, and it's found in certain foods.

L-Serine-d₇ is the deuterium labeled L-Serine. L-Serine ((-)-Serine; (S)-Serine), one of the so-called non-essential amino acids, plays a central role in cellular proliferation.

L-Proline-¹³C₅,1-¹⁵N is the ¹³C- and ¹⁵N-labeled L-Proline. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.

L-Tyrosine-¹³C₉ is the ¹³C-labeled L-Tyrosine. L-Tyrosine is a non-essential amino acid which can inhibit citrate synthase activity in the posterior cortex.

L-Arginine-¹³C (hydrochloride) is the ¹³C-labeled L-Arginine hydrochloride. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.

L-Isoleucine-15N is the 15N-labeled L-Isoleucine. L-isoleucine is a nonpolar hydrophobic amino acid. L-Isoleucine is an essential amino acid.

L-Leucine-d₁₀ is the deuterium labeled L-Leucine. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway.

L-Phenylalanine-¹³C₉ is the ¹³C-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.

N-Acetylglycine-d₅ (Aceturic acid-d₅) is the deuterium labeled N-Acetylglycine (HY-Y0069). N-Acetylglycine (Aceturic acid) is a minor constituent of numerous foods. N-Acetylglycine is a flavor enhancer which elicits Monosodium glutamate (MSG)-like sensory experiencesN-Acetylglycine.

L-Hydroxyproline-d₃ is the deuterium labeled L-Hydroxyproline. L-Hydroxyproline, one of the hydroxyproline (Hyp) isomers, is a useful chiral building block in the production of many pharmaceuticals.

D-Phenylalanine-d₅ is the deuterium labeled D-Phenylalanine. D-Phenylalanine is the synthetic dextro isomer of phenylalanine. D-Phenylalanine inhibits biofilm development of Pseudoalteromonas sp. SC2014.

L-Aspartic acid-¹⁵N is the ¹⁵N-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.

γ-Aminobutyric acid-d₂ is the deuterium labeled γ-Aminobutyric acid. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain[1][2], binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors)[2].

L-Pyroglutamic acid-d₅ is the deuterium labeled L-Pyroglutamic acid (HY-76082). L-Pyroglutamic acid is the levo-isomer of Pyroglutamic acid. L-Pyroglutamic acid is the biologically active enantiomer in humans. Pyroglutamic acid is an intermediate in glutathione metabolism.

D-Alanine-d₃ is the deuterium labeled D-Alanine. D-Alanine is a weak GlyR (inhibitory glycine receptor) and PMBA agonist, with an EC50 of 9 mM for GlyR.

N-Acetyl-L-aspartic acid-d₃ is the deuterium labeled N-Acetyl-L-aspartic acid (HY-113524). N-Acetyl-L-aspartic acid is a derivative of Aspartic acid (HY-N0666) and endogenous compound. N-Acetyl-L-aspartic acid acts as an acetyl donor. N-Acetyl-L-aspartic acid is involved in brain metabolism. N-Acetyl-L-aspartic acid is used in the research of neurodegenerative diseases (such as Canavan disease).