|
L-Tyrosine
|
 |
|
C9H11NO3
181.19
L-Tyrosine |
|
L-Tyrosine
[60-18-4] |
| » Tyrosine
contains not less than 98.5 percent and not more than 101.5
percent of C9H11NO3, as
L-Tyrosine, calculated on the dried basis. |
|
Packaging and storage— Preserve in well-closed containers.
|
| Identification: Infrared
Absorption. |
| Specific rotation |
between -9.8°and
-11.2° |
| Loss on drying |
not more than
0.3% |
| Residue on ignition |
not more than 0.4% |
| Chloride |
0.04% |
| Sulfate |
0.04% |
| Iron |
0.003% |
| Heavy metals |
0.0015% |
| Chromatographic purity |
not
more than 0.5% (individual impurity)
not more than 2.0% (total
impurity) |
| Organic volatile impurities |
meets the requirements |
| Assay |
not
less than 98.5 percent and
not more than 101.5 percent
of C9H11NO3 |
