Arginine, also known as l-arginine, is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group, an α-carboxylic acid group, and a side chain consisting of a 3-carbon aliphatic straight chain ending in a guanidino group. At physiological pH, the carboxylic acid is deprotonated, the amino group is protonated, and the guanidino group is also protonated to give the guanidinium form, making arginine a charged, aliphatic amino acid. It is the precursor for the biosynthesis of nitric oxide. It is encoded by the codons CGU, CGC, CGA, CGG, AGA, and AGG.
L-Arginine is used as a pharmaceutical raw material and food additive. L-Arginine is an essential amino acid for maintaining the growth and development of infants and young children. It is an intermediate metabolite of the ornithine cycle, which causes ammonia to convert into urea, thereby reducing blood ammonia levels. It is also the main component of sperm protein, which has the effect of promoting sperm production and providing energy for sperm motility.
|Appearance||White crystals or crystalline powder||Conforms|
|Loss on drying||≤0.50%||0.25%|
|Residue on ignition||≤0.30%||0.08%|
|Appearance:||White crystals or crystalline powder|
Used as a nutritional supplement; flavoring agents or pharmaceutical ingredients.
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