L-valine
Name:L-valine
CAS:72-18-4
Quality standard: AJI,USP,FCC,EP,BP,CP
COA online download: CP2005, AJI92/97, USP-32, FCC-V, EP5, BP-2009
Alias: L- alpha - aminoiso - amyl acid
Molecular formula; C5H11NO2
Molecular weight: 117.15
Character: white monoclinic crystal or crystalline powder, and the recrystallized in alcohol solution is colorless sheet or phosphor crystal. Odorless, with special bitterness. The melting point is about 315 degrees. The pH value of 5% aqueous solution is 5.5-7.0. for heat, light and air. It is easily soluble in water (8.85g/100ml, 25 degrees), almost insoluble in ethanol and ether. It is difficult to separate leucine.
Purpose: L- valine is an essential amino acid of human body, and is also one of the three branched chain amino acids. Because of its special structure and function, valine plays a very important role in human life metabolism. It is also used to strengthen food and so on.
Valine is one of twenty protein amino acids. From a nutritional point of view, valine is also an essential amino acid. Its English name valine is named after valerian, and its Chinese name is also called valine. Its codons are guu, Gua, GUC and GUG. It is a nonpolar amino acid. In sickle cell disease, valine in hemoglobin replaces the hydrophilic amino acid glutamate: because valine is hydrophobic, hemoglobin cannot fold correctly. Valine is completely electrically neutral. When its side chain is also neutral, and the charge generated by its amino and carboxyl groups is just balanced, this molecule is called zwitterion. Food sources rich in valine include white cheese, fish, poultry, cattle, peanuts, sesame seeds and shore beans.It is used in medicine as one of the components of amino acid infusion, and can also be used as a nutritional supplement
IUPAC
(2R)-2-amino-3-methylbutanoic acid