L-Tryptophan | CAS NO:73-22-3 |
Chemical Name | L-Tryptophan |
Molecular Structure |
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Molecular Formula | C11H12N2O2 |
Molecular Weight | 204.23 |
Characteristics | White to yellowish white crystalline powder |
Packing | 25㎏/drum,25㎏/carton |
Quality Standard | AJI92/USP28/EP5/FCCIV |
Specification
Specific rotation[a]D20° | -30.5°~-32.5° |
State of solution | Clear |
(Tranamittance) | ≥95.0% |
Chloride(Cl) | ≤0.02% |
Ammonium(NH4) | ≤0.02% |
Sulfate(SO4) | ≤0.020% |
Iron(Fe) | ≤20PPm |
Heavy metals(Pb) | ≤10PPm |
Arsenic(As2O3) | ≤1PPm |
Other amio acids | conforms |
Loss on drying | ≤0.20% |
Residue on ignition(Sulfated) | ≤0.10% |
Assay | 99.0~100.5% |
PH | 5.4~6.4 |