|
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 |
