L-Tryptophan-13C (Tryptophan-13C) is the 13C-labeled L-Tryptophan. L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3.

Gold(III) chloride trihydrate is a reducing agent. Gold(III) chloride trihydrate Can be used for the chemical synthesis of gold nanoparticles (NP).

13C-urea is the 13C labelled urea. The 13C-urea breath test (13C-UBT) is one of the best methods for the diagnosis of Helicobacter pylori infection.

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-Phenylalanine-13C9 ((S)-2-Amino-3-phenylpropionic acid-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 Ki 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.

DL-Tyrosine-13C9,15N is the 13C- and 15N-labeled DL-Tyrosine. DL-Tyrosine is an aromatic nonessential amino acid synthesized from the essential amino acid phenylalanine. DL-Tyrosine is a precursor for several important neurotransmitters (epinephrine, norepinephrine, dopamine).

L-Phenylalanine-13C9,15N ((S)-2-Amino-3-phenylpropionic acid-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 Ki 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-Homoarginine-13C7,15N4 hydrochloride is the 13C- and 15N-labeled H-HomoArg-OH.HCl. H-HomoArg-OH.HCl is an endogenous metabolite.

L-Lysine-13C6 dihydrochloride is the 13C-labeled L-Lysine dihydrochloride. L-lysine dihydrochloride is an essential amino acid with important roles in connective tissues and carnitine synthesis, energy production, growth in children, and maintenance of immune functions.

L-Arginine-13C6 ((S)-(+)-Arginine-13C6) 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-Arginine-13C6,15N4 ((S)-(+)-Arginine-13C6,15N4) hydrochloride is the 13C- and 15N-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-Leucine-13C6,15N is the 13C- and 15N-labeled L-Leucine. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway.

D-Fructose-13C6 is the 13C labeled D-Fructose. D-Fructose (D(-)-Fructose) is a naturally occurring monosaccharide found in many plants.

L-Histidine-13C6 (H-His-OH-13C6) hydrochloride hydrate is the 13C-labeled L-Histidine hydrochloride hydrate. L-Histidine hydrochloride hydrate (H-His-OH.HCl.H2O) is an endogenous metabolite.

L-Histidine-13C6,15N3 (H-His-OH-13C6,15N3) hydrochloride hydrate is the 13C- and 15N-labeled L-Histidine hydrochloride hydrate. L-Histidine hydrochloride hydrate (H-His-OH.HCl.H2O) is an endogenous metabolite.

L-Glutamic acid-13C5 is the 13C-labeled L-Glutamic acid. L-Glutamic acid acts as an excitatory transmitter and an agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA). L-Glutamic acid shows a direct activating effect on the release of DA from dopaminergic terminals.

L-Glutamic acid-13C5,15N is the 13C- and 15N-labeled L-Glutamic acid. L-Glutamic acid acts as an excitatory transmitter and an agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA). L-Glutamic acid shows a direct activating effect on the release of DA from dopaminergic terminals.

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.

Itaconic acid-13C5 is the 13C labeled Itaconic acid. Itaconic acid, a precursor of polymers, chemicals, and fuels, can be synthesized by many fungi. Itaconic acid also is a macrophage-specific metabolite. Itaconic acid mediates crosstalk between macrophage metabolism and peritoneal tumors.

L-Ornithine-1,2,3,4,5-13C5 hydrochloride is the 13C-labeled L-Ornithine hydrochloride. L-Ornithine hydrochloride is a free amino acid that plays a central role in the urea cycle and is also important for the disposal of excess nitrogen.

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

L-Valine-13C5 is the 13C-labeled L-Valine. L-Valine is one of 20 proteinogenic amino acids. L-Valine is an essential amino acid.

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-Valine-13C5,15N is the 13C- and 15N-labeled L-Valine. L-Valine is one of 20 proteinogenic amino acids. L-Valine is an essential amino acid.

L-Glutamine-13C5,15N2 (L-Glutamic acid 5-amide-13C5,15N2) is the 13C- and 15N-labeled L-Glutamine. L-Glutamine (L-Glutamic acid 5-amide) is a non-essential amino acid present abundantly throughout the body and involved in many metabolic processes. L-Glutamine provides a source of carbons for oxidation in some cells.

γ-Aminobutyric acid-13C4 (4-Aminobutyric acid-13C4) is the 13C-labeled γ-Aminobutyric acid. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain, binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors).

L-Azidohomoalanine-1,2,3,4-13C4 hydrochloride is the 13C- and 15N-labeled L-Azidohomoalanine hydrochloride. L-Azidohomoalanine hydrochloride is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.

L-Threonine-13C4,15N is the 13C- and 15N-labeled L-Threonine. L-Threonine is a natural amino acid, can be produced by microbial fermentation, and is used in food, medicine, or feed.

L-Aspartic acid-13C4 is the 13C-labeled L-Aspartic acid. L-Aspartic acid is is an amino acid, shown to be a suitable prodrug for colon-specific drug deliverly.

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.