L-Tryptophan

                                   
 

L-tryptophan is an essential amino acid for the human body. Its main functions include participating in the synthesis of serotonin (which regulates mood and sleep) and melatonin (which regulates sleep rhythms), and it can also assist in the synthesis of proteins and niacin. It is crucial for neural regulation and physiological metabolism. As a nutritional fortifier, it is added to food to enhance the nutritional value of the food.

【Common Name】L-Tryptophan  【Molecular Formula】C11H12N2O2   【Molecular Weight】204.23

【Physical and Chemical Properties】White crystals or crystalline powder. Odorless or slightly odorous, slightly bitter. Melting point 289℃, discolors upon prolonged exposure to light. Soluble in hot ethanol, alkaline solutions and dilute hydrochloric acid, slightly soluble in water.

【Category】One of the essential amino acids for the human body

【Storage Conditions】Store at low temperature, in a dry and low-humidity environment, protected from light, and sealed.

 

Technical Indicators:


	

		

			

			
Inspection items
			
			

			
Enterprise standards
			
			

			
Inspection items
			
			

			
Enterprise standards
			
		
		

			

			
Appearance
			
			

			
White crystals or crystalline powder
			
			

			
Heavy Metal(On a Pb basis)
			
			

			
≤10ppm
			
		
		

			

			
Purity W/%
			
			

			
≥99.0-100.5
			
			

			
Arsenic (on an AS basis)
			
			

			
≤1ppm
			
		
		

			

			
Specific rotation
			
			

			
-30.5°~-32.5°
			
			

			
Dry weight loss W/%
			
			

			
≤0.2
			
		
		

			

			
Translucent
			
			

			
≥95%
			
			

			
Ash residue W/%
			
			

			
≤0.1
			
		
		

			

			
Chloride
			
			

			
≤200ppm
			
			

			
pH
			
			

			
5.4-6.4
			
		
		

			

			
Sulfate
			
			

			
≤200ppm
			
			

			
Ammonium salt
			
			

			
≤200ppm
			
		
		

			

			
Iron salt
			
			

			
≤20ppm