CAS NO.:73-22-3
Product standard: AJI92 Version, USP24/28 Version, FCC4 Version
Description: White to yellowish white crystals or crystalline powder
Specification of USP 30:
  Assay: 98.5101.5
  Specific rotation []20D :-29.4°-32.8
  Chloride: =0.05
  Iron: =30ppm
  Sulfate: =0.03
  Heavy metals: =15ppm
  Loss on drying: =0. 3
  Residue on ignition: =0. 10
  PH: 5.5~7.0
Usage: L-Tryptophan is heterocyclic amino acid, is a kind of important and necessary amino acids for human body. It is widely applied in pharmaceutical and food fields.
Package: 25kg drum