• l-tryptophan
  • l-tryptophan


  • Product name: L-Tryptophan
  • Packing: 25kg/drum
  • Specific rotation: -29.4°~-32.8°
  • Chloride: ≤0.05%
  • Iron: ≤30ppm
  • Sulfate: ≤0.03%

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■ Specifications
1 Brand:Brightol
2 Grade:Food grade
3 Function :bodybuilding
4 Quality :100%nature
5 Product group: Pharmaceutical
6 Purity > 99%
7 Packing:Under your require
8 Color: White powder
L-tryptophan is an amino acid, a protein building block that can be found in many plant and animal proteins. L-tryptophan is called an “essential” amino acid because the body can’t make it. It must be acquired from food
L-tryptophan is used for insomnia, sleep apnea, depression, anxiety, facial pain, a severe form of premenstrual syndrome called premenstrual dysphoric disorder (PMDD), smoking cessation, grinding teeth during sleep (bruxism), attention deficit-hyperactivity disorder (ADHD), Tourette's syndrome, and to improve athletic performance. 
4.Packing details:
Packing: By 25kgs/drum or carton ,inner by plastic bag or customized
Storage: Store in cool and dry places. Keep away from strong light.
Shelf Life: 2 years when properly stored.
■ Full Data
Product name L-Tryptophan Packing 25kg/drum
Batch number 20120529 Manufacture Date 05/29/2012
Batch weight 1225kg Expiry Date 05/28/2014
Item Standard Analysis results
Identification Infrared Absorption Conforms
Description White to slightly yellowish-white crystals or crystalline powder White crystalline powder
Specific rotation -29.4°~-32.8° -31.4º
Chloride ≤0.05% <0.05%
Iron ≤30ppm <30ppm
Sulfate ≤0.03% <0.03%
Heavy metals ≤15ppm <15ppm
Loss on drying ≤0. 3% 0.07%
Residue on ignition ≤0. 10% 0.07%
Assay 98.5%~101.5% 99.6%
Organic volatile impurities Meets the requirement Conforms
PH 5.5~7.0 5.9
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