L-tryptophan

L-tryptophan-long light colored, with water of the heat generating a small amount of indole, such as sodium hydroxide, copper sulfate, heating in the presence, and then produce large amounts of indole. Tryptophan and acid is heated in the dark, more stable. And other amino acids, sugars, aldehydes coexist vulnerable to decomposition. Hydrocarbon coexist with 5molL sodium hydroxide, heated to C remained stable. With acid to break down proteins, tryptophan is completely decomposed generate rot black material. Slightly soluble Soluble in hot water, hot ethanol, dilute hydrochloric acid, and an alkaline hydroxide solution. The case of essential amino acids