L-Hydroxyproline (trans-4-Hydroxy-L-proline) is a collagen-specific amino acid. It is used as a diagnostic marker of bone turnover and liver fibrosis.

L-Kynurenine ((S)-Kynurenine) is a aryl hydrocarbon receptor agonist. L-Kynurenine is a metabolite of the amino acid L-tryptophan used in the production of niacin and a central compound of the tryptophan metabolism pathway.

L-Kynurenine ((S)-Kynurenine) is a aryl hydrocarbon receptor agonist. L-Kynurenine is a metabolite of the amino acid L-tryptophan used in the production of niacin and a central compound of the tryptophan metabolism pathway.

L-Lactic acid is a natural product that is used as a food additive.,

Leucine ((S)-Leucine, Leu) is one of nine essential amino acids in humans which is important for protein synthesis and many metabolic functions. It contributes to regulation of blood-sugar levels; growth and repair of muscle and bone tissue; growth hormone production; and wound healing. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR […]

Leucine ((S)-Leucine, Leu) is one of nine essential amino acids in humans which is important for protein synthesis and many metabolic functions. It contributes to regulation of blood-sugar levels; growth and repair of muscle and bone tissue; growth hormone production; and wound healing. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR […]

L-Leucyl-L-alanine Hydrate (H-Leu-Ala-OH) is a dipeptide composed of L-leucine and L-alanine joined by a peptide linkage. It is a metabolite.

Lysine is an α-amino acid that is used in the biosynthesis of proteins and is required for growth and tissue repair.

L-Lysine hydrochloride is an essential amino acid. It is often added to animal feed used as a dietary supplement and plays a major role in calcium absorption, building muscle protein, recovering from surgery or sports injuries, and the body’s production of hormones, enzymes, and antibodies.

L-Methionine is an essential sulfur-containing, free-form amino acid, acts as an antioxidant promoter, and contributes to the synthesis of S-adenosyl-L-methionine (SAMe).

L-Methionine is an essential sulfur-containing, free-form amino acid, acts as an antioxidant promoter, and contributes to the synthesis of S-adenosyl-L-methionine (SAMe).

L-Mimosine (Leucenol) is a non-protein amino acid, and acts as an iron chelator.

L-Mimosine (Leucenol) is a non-protein amino acid, and acts as an iron chelator.

L-NAME HCl (NG-Nitroarginine methyl ester, N-Nitro-L-arginine methylester) is a nonselective inhibitor of nitric oxide synthetases (NOS) for nNOS (bovine), eNOS (human), and iNOS (murine), with Ki of 15 nM, 39 nM and 4.4 μM, respectively.

L-ornithine ((S)-2,5-Diaminopentanoic acid) has an antifatigue effect by increasing the efficiency of energy consumption and promoting the excretion of ammonia. It is one of the key reactants in the urea cycle.

L-ornithine hydrochloride ((S)-2,5-Diaminopentanoic acid) has an antifatigue effect by increasing the efficiency of energy consumption and promoting the excretion of ammonia. It is one of the key reactants in the urea cycle.

L-ornithine hydrochloride ((S)-2,5-Diaminopentanoic acid) has an antifatigue effect by increasing the efficiency of energy consumption and promoting the excretion of ammonia. It is one of the key reactants in the urea cycle.

L-Proline is one of non-essential amino acids and an essential component of collagen that is important for proper functioning of joints and tendons.

L-pyroglutamic acid (L-pyroglutamate, 5-Oxoproline, pidolic acid) is a natural nutrient and amino acid derived from glutamic acid. It is a metabolite in the glutathione cycle that is converted to glutamate by 5-oxoprolinase.

L-Quebrachitol (L-QCT), a natural product isolated from many plants, promotes proliferation and cell DNA synthesis. L-Quebrachitol upregulates bone morphogenetic protein-2 (BMP-2) and runt-related transcription factor-2 (Runx2) and regulatory genes associated with mitogen-activated protein kinase (MAPK) and Wnt/β-catenin signaling pathway, while down-regulating the receptor activator of the nuclear factor-κB(NF-κB) ligand (RANKL) mRNA level.

L-Quebrachitol (L-QCT), a natural product isolated from many plants, promotes proliferation and cell DNA synthesis. L-Quebrachitol upregulates bone morphogenetic protein-2 (BMP-2) and runt-related transcription factor-2 (Runx2) and regulatory genes associated with mitogen-activated protein kinase (MAPK) and Wnt/β-catenin signaling pathway, while down-regulating the receptor activator of the nuclear factor-κB(NF-κB) ligand (RANKL) mRNA level.

L-SelenoMethionine (SeMet), a naturally occurring amino acid, is a major food-form of selenium. It has been used as a supplement, and exhibits some important functions like cancer prevention and antioxidative defense.

L-SelenoMethionine (SeMet), a naturally occurring amino acid, is a major food-form of selenium. It has been used as a supplement, and exhibits some important functions like cancer prevention and antioxidative defense.

L-serine, one of the so-called non-essential amino acids, plays a central role in cellular proliferation.

L-serine, one of the so-called non-essential amino acids, plays a central role in cellular proliferation.

L-Theanine is a relaxing and nondietary amino acid found pretty much exclusively in teas from Camellia sinensis and is known to promote relaxation without sedation.

L-Threonic acid Calcium Salt (Calcium threonate) is a calcium salt of threnoic acid. L-Threonic acid is a metabolite of ascorbic acid (vitamin C).

L-Threonine is an essential amino acid which is in its active form. It is important for the formation of collagen, elastin, and tooth enamel, and aids liver and lipotropic function when combined with aspartic acid and methionine.

L-Thyroxine (Levothyroxine) is a synthetic form of thyroxine and a hormone replacement drug.

L-tryprophan is an essential amino acid that acts like a natural mood regulator that is necessary for normal growth in infants and for nitrogen balance in adults.

L-tryprophan is an essential amino acid that acts like a natural mood regulator that is necessary for normal growth in infants and for nitrogen balance in adults.

L-tryptophanamide (H-Trp-NH2) is an amino acid amide that is the carboxamide of L-tryptophan.

L-tyrosine ((S)-Tyrosine, P-Tyrosine, L-p-Tyrosine) is a non-essential amino acid. In animals it is synthesized from Ephenylalanine.

Valine is a branched-chain essential amino acid that has stimulant activity and promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.

L-Xylose is a synthesized levorotary form of Xylose, a sugar first isolated from wood.

L-α-phosphatidylcholine, a surfactant and a constituent of the liposomal carrier system, has shown hepatoprotection in the various hepatotoxicity model.

L-α-phosphatidylcholine, a surfactant and a constituent of the liposomal carrier system, has shown hepatoprotection in the various hepatotoxicity model.

L(-)-Pipecolinic acid (L-Homoproline) is a normal human metabolite present in human blood.

L(-)-Sorbose (L(-)-Sorbopyranose) is a ketose sugar that is commonly used in the commercial synthesis of ascorbic acid.

L-asparagine is a non-essential amino acid that is involved in the metabolic control of cell functions in nerve and brain tissue, being used for a variety of pharmaceutical applications.