L-Tyrosine
Product Name: L-Tyrosine
CAS No.: 60-18-4
Molecular Formula: C9H11NO3
Standarad: USP24, AJI97 and etc.
Package: 25kg/drum
Application: One of essential materials to prepare all kinds of medicine such as L-topa.
Specification
|
Item |
Specifications | |
|
USP24 |
AJI97 | |
|
Appearance |
White crystals or crystalline powder; tasteless | |
|
Assay,% |
98.5~101.5 |
99.0~101.0 |
|
Specific optical rotation |
-9.8°~ -11.2° |
-11.3°~ -12.1° |
|
Transmittance, % |
- - - |
≥98.0 |
|
Heavy Metals (as Pb), % |
≤0.001 |
≤0.001 |
|
pH value |
- - - |
5.0~6.5 |
|
Loss on drying, % |
≤0.3 |
≤0.2 |
|
Residue on ignition, % |
≤0.4 |
≤0.1 |
|
Chloride (as Cl),% |
≤0.04 |
≤0.02 |
|
Ammonium (as NH4),% |
- - - |
≤0.02 |
|
Sulfate (as SO4), % |
≤0.04 |
≤0.02 |
|
Iron, % |
≤0.003 |
≤0.001 |
|
Arsenic (as As), % |
≤0.0001 |
≤0.0001 |
|
Other amino acids |
- - - |
Not detd. |
|
Organic volatile impurities |
Meets the requirement |
- - - |