L-Tryptophan

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L-Tryptophan

CAS NO:73-22-3

Chemical NameL-Tryptophan
Molecular Structure1ff90a5457fd60fd91063b3b91baafc5.jpg
Molecular FormulaC11H12N2O2
Molecular Weight204.23
CharacteristicsWhite to yellowish white crystalline powder
Packing25㎏/drum,25㎏/carton
Quality  StandardAJI92/USP28/EP5/FCCIV
Specification
Specific rotation[a]D20° 

-30.5°~-32.5° 

State of solutionClear
(Tranamittance)≥ 95.0%
Chloride(CI)≤ 0.02%
Ammonium(NH4)≤ 0.02%
Sulfate(SO4)≤ 0.020% 
Iron(Fe)≤ 10PPm
Heavy metals(Pb)≤ 10PPm
Arsenic(As2O3)≤ 1PPm
Loss on drying≤ 0.20%
Residue on ignition (Sulfated)≤ 0.10%
Assay99.0~100.5%
PH5.4~6.4 
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