L-Tryptophan [ 73-22-3 ]

Purity: 98% for white crystalloid powder. Odurless, flavor small suffering, slightly soluble in water 1.14%, 25 (℃), soluble in ethanol. Soluble in dilute acids or dilute alkali. Mp289 ℃ (breakdown). Isoelectric 5.89. [alpha] D + 2.8 (5mol/L HCl in), [alpha] D + 6.2 (0.5 mol NaOH/L). Long time illumination is shading. And the water of heat produce a small number of indoles, in the presence of sodium hydroxide, copper sulfate, then generate more heat quantity, and acid in the dark indoles heating is stable, but with other amino acids, sugar, aldehydes andcadmium heating is extremely easy decomposition. By acid decomposing protein, tryptophan complete decomposition. Increase nutrition supplements.

Egg white protein, fish, maize etc contains tryptophan to restrict amino acids, rice and other grain content is less. But with lysine, methionine, threonine close to socketable amino acids. According to the 0.02% tryptophan and 0.1% of lysine add to maize products, can significantly improve the protein titer.

Aminophenol teansfusion ans synthesize aminophenol preparations an important part of the. Can treat the nicotinic acid deficiency. To improve the nutritional, enhanced physique. Used in biochemical research, medicine on used as a sedative.