Short Description:

Product: L-Tryptophan

CAS No.: 73-22-3

Standard: CP, AJI, USP

Function and application: Nutrition enhancers, pharmaceutical intermediates, food additives, etc.

Packaging: 25kg/drum, others as required


Shelf life: two years

Product Detail

Product Tags


L-Tryptophan CP2015 AJI92 USP32 USP40
Description White to slightly yellow crystals or crystalline powder White to yellowish white crystals or crystalline powder
Identification Conforms Conform Conform
Assay ≥99.0% 98.5%~100.5% 98.5%~101.5% 98.5%~101.5%
pH 5.46.4 5.46.4 5.5~7.0 5.5~7.0
Transmittance ≥95.0% ≥95.0%
Loss on drying ≤0.2% ≤0.20% ≤0.3% ≤0.3%
Residue on ignition ≤0.1% ≤0.10% ≤0.1% ≤0.1%
Chloride ≤0.02% ≤0.020% ≤0.05% ≤0.05%
Heavy Metals ≤0.001% ≤10ppm ≤15ppm ≤15ppm
Iron ≤0.002% ≤20ppm ≤30ppm ≤30ppm
Sulfate ≤0.02% ≤0.020% ≤0.03% ≤0.03%
Endotoxin 50EU/g
Arsenic ≤0.0001% ≤1ppm
Ammonium ≤0.02% ≤0.02%
Other amino acids Conforms Meet the requirements
Pyrongen Conform
Specific Rotation -30.0° -32.5° -30.0° -32.5° -29.4°~-32.8° -29.4°~ -32.8°
Organic impurities Conforms

Function:Tryptophan is the precursor of the human body’s important neurotransmitter 5-hydroxytryptamine and one of the essential amino acids; used in nutritional supplements for pregnant women and special milk powder for infants; used in the treatment of niacin deficiency (pellagra) Medicine; as a tranquilizer, regulate mental rhythm and improve sleep. Other functions include
Promote the synthesis of hemoglobin
Prevention and treatment of mangy
Promote growth and increase appetite
The sweetness is 35 times that of granulated sugar, and it is better for people with diabetes and obesity to eat toothpaste and sugar foods.
Nutritional supplements. Antioxidants.

  • Previous:
  • Next:

  • Write your message here and send it to us