Description: |
N-Acetyl-L-Tryptophan |
CAS NO.: |
1218-34-4 |
Add time: |
2008-1-3 16:07:13 |
N-Acetyl-L-Tryptophan | |
Item |
Specification |
Appearance |
White crystals or crystalline powder |
Specific Rotation[α]D20 |
+25.8° to +27.0° |
State of solution |
Clear and colorless |
Not less than 95.0% | |
Chloride (Cl) |
Not more than 0.020% |
Ammonium (NH4) |
Not more than 0.02% |
Sulfate (SO4) |
Not more than 0.020% |
Iron (Fe) |
Not more than 10ppm |
Heavy Metals (Pb) |
Not more than 10ppm |
Aresenic (As2O3) |
Not more than 1ppm |
Other amino aicds |
No spot |
Loss on drying |
Not more than 0.20% |
Residue on ignition |
Not more than 0.10% |
Assay |
98.5% to 101.0% |
pH |
2.0 to 3.5 |