Premium Ingredient Co., Ltd.

China Manufacturer with main products: Glutamine, Glycine, Sodium Hyaluronate, l-Citrulline, Vitamin B1, Ascobyl Palmitate, l-Lysine Monohydrochloride, l-Cysteine Hcl Mono

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Quick Details

  • CAS No.: 73-22-3
  • Grade Standard: Food Grade,Medicine Grade


Supplier: Premium Ingredient Co.,Ltd

Product Name: L-Tryptophan       Cas No.: 73-22-3       Quality Standard: USP30
Test item
98.5% to 101.5%
Infrared absorption
Specific rotation
-29.4° to -32.8°
5.5 to 7.0
Loss on drying
Not more than 0.3%
Residue on ignition
Not more than 0.1%
Not more than 0.05%
Not more than 0.03%
Not more than 0.003%
Heavy metals
Not more than 0.0015%
Organic volatile impurities
Meets the requirements
Storage: Preserve in well-closed containers.

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