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N-Acetyl-L-Tyrosine
| Chemical Name£º |
3-(4-Hydroxyphenyl)-L-alanine |
| Structure Formula£º |
 |
| Molecular Formula£º |
C9H11NO3 |
| Molecular Weight£º |
181.19 |
| Cas No£º |
[60-18-4] |
| Characteristics£º |
White, styli form crystals with bitterness, soluble in dilute acids or base |
| Quality Standards£º |
USP24, AJI97 and etc. |
| |
| 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¡ã~ -11.2¡ã |
-11.3¡ã~ -12.1¡ã |
| Transmittance, % |
- - - |
¡Ý98.0 |
| Heavy Metals (as Pb), % |
¡Ü0.001 |
¡Ü0.001 |
| PH Value |
- - - |
5.0~6.5 |
| Loss on drying, % |
¡Ü0.3 |
¡Ü0.2 |
| Residue on ignition, % |
¡Ü0.4 |
¡Ü0.1 |
| Chloride (as Cl),% |
¡Ü0.04 |
¡Ü0.02 |
| Ammonium (as NH4),% |
- - - |
¡Ü0.02 |
| Sulfate (as SO4), % |
¡Ü0.04 |
¡Ü0.02 |
| Iron, % |
¡Ü0.003 |
¡Ü0.001 |
| Arsenic (as As), % |
¡Ü0.0001 |
¡Ü0.0001 |
| Other amino acids |
- - - |
Not detd. |
| Organic volatile impurities |
Meets the requirement |
- - - |
| |
| The Characteristics and Uses£º |
One of essential materials to prepare all kinds of medicine such as L-topa |
| Package and Transport£º |
Fiber drum double polyethylene bags inside (25kgs) |
| Storage£º |
Cool, dry, dark in closed containers, recommended limit 2 year. |
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