L-Tryptophan CAS:73-22-3 98.5%～101.0%
|
Cas.No |
73-22-3 |
|
Assay |
99.0-101.0% |
|
Description |
White to yellowish white crystals or crystalline powder, odorless, slightly bitter taste |
|
Uses |
Infusion |
|
Packaging |
25kg&50kg |
|
Pharmacopeia |
JP,USP,EP,FCC |
|
STORAGE |
Controlled room temperature in tight container |
SPECIFICATIONAND PROCEDURE
State of solution
(Transmittance) |
Not Less Than 95.0% |
|
pH |
5.5～6.4 |
|
Specific rotation[α]20D |
-30.5～-32.5° |
|
Specific rotation[α]25D |
-29.4～-32.8° |
|
Ammonium (NH4) |
Not More Than 0.020% |
|
Chloride (Cl) |
Not More Than 0.020% |
|
Sulfate (SO4) |
Not More Than 0.020% |
|
Iron (Fe) |
Not More Than 10 ppm |
|
Heavy metals (Pb)** |
Not More Than 10 ppm |
|
Arsenic (As2O3) |
Not More Than 1 ppm |
|
Related substances |
Not More Than 0.5% |
|
Loss on drying |
Not More Than 0.20% |
|
Residue on ignition |
Not More Than 0.10% |
|
Endotoxin* |
Less Than 6.0 EU/g |
|
Assay (dry basis) |
99.0～101.0% |
An essential amino acid that is necessary for normal growth in infants and for nitrogen balance in adults. It is a precursor of indole alkaloids in plants. It is a precursor of serotonin (hence its use as an antidepressant and sleep aid). It can be a precursor to niacin, albeit inefficiently, in mammals.
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