L-Phenylalanine () là gì? Ứng dụng, liều dùng, sản phẩm thay thế & thông số

L-Phenylalanine (abbreviated as L-Phe), also known as L-α-Amino-β-phenylpropionic acid or L-β-Phenylalanine, is an aromatic essential amino acid containing a benzene ring structure, and is one of the 20 basic proteinogenic amino acids. Its molecular formula is C9H11NO2, molecular weight is 165.19, CAS number is 63–91–2, and EINECS number is 200–568–1. L-Phenylalanine is an essential amino acid that the human body cannot synthesize on its own and must be obtained through food or supplements. L-Phenylalanine appears as colorless to white plate-like crystals or white crystalline powder, with a slight special odor and a bitter taste. It melts and decomposes at about 283°C. It is slightly soluble in water (1–5 g/100 mL at 25°C), insoluble in ethanol, methanol and diethyl ether, and soluble in dilute inorganic acids and alkaline solutions. It is stable under heat, light and in air, but unstable under alkaline conditions, and colors when heated with glucose. As an aromatic amino acid, the side chain of L-Phenylalanine contains a benzene ring, giving it hydrophobic and aromatic characteristics, playing an important role in protein folding and molecular recognition. L-Phenylalanine is a precursor to several important neurotransmitters (including dopamine, norepinephrine and epinephrine), and is one of the few essential amino acids that can directly affect mood, attention and cognitive function. L-Phenylalanine is widely used in the food industry, pharmaceutical industry, sports nutrition supplements, feed additives and biochemical research fields. In the food industry, it is the core synthetic raw material for the low-calorie sweetener aspartame; in the pharmaceutical field, it is an important component of amino acid infusions and complex amino acid formulations, used in neurological disease treatment, pain management and nutritional support; in sports nutrition, it helps enhance athletic performance and mental focus.

Appearance: Colorless to white plate-like crystals or white crystalline powder, odorless, bitter taste.

Molecular Formula and Molecular Weight: C9H11NO2, molecular weight 165.19.