powder powder 2
2 year ago
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Jiangsu Kaihuida New Material Technology Co., Ltd
Basic Info.
Product Description
CAS NO.: 60-18-4
Formula: C9H11NO3
Molecular weight: 181.19
Other name: L-2-Amino-3-(4-hydroxyphenyl)propanoic acid
Standard: USP39, AJI92
Product Description:
L-Tyrosine is the catalytic substrate for the monophenolase function of tyrosinase and is the main raw material for the final formation of eumelanin and pheomelanin. In the research and development of whitening cosmetics, it is possible to effectively inhibit the production of melanin by studying the synthesis of tyrosinase structural analogues that compete with tyrosine.
Vitiligo patients eat foods containing tyrosine can promote the formation of melanin and reduce the symptoms of vitiligo.
Amino acid infusion and amino acid compound preparation raw material, used as nutritional supplements. Treatment of polio and nuclear encephalitis, hyperthyroidism and other diseases. It is also used as a raw material for the manufacture of diiodotyrosine,dibromotyrosine and L-dopa.
Specification Sheet of AJI92:
| ITEM | SPECIFICATION |
| Appearance | White crystals or crystalline powder |
| Loss on drying | ≤0.20% |
| Residue on ignition | ≤0.10% |
| Specific optical rotation[a]D20° | -11.3° ~-12.1° |
| Particle Size | 98% pass 20 mesh |
| PH | 5.0~6.5 |
| Tansmittance | ≥95% |
| Heavy metals (Pb) | ≤10ppm |
| Ammonium (as NH4) | ≤200ppm |
| As | ≤1ppm |
| Pb | ≤3ppm |
| Cd | ≤1ppm |
| Hg | ≤0.1ppm |
| Iron | ≤10ppm |
| Chloride(C1) | ≤0.02% |
| Sulfate(SO4) | ≤0.02% |
| L-Tyrosine | 99% ~100.5% |
| Total Plate Count | ≤ 1000 cfu/g |
| Yeast&Mold | ≤ 100 cfu/g |
| Coliforms | Negative/25g |
| E Coli | Negative |
| Salmonella | Negative/25g |
| S.Aureus | Negative/25g |
| Packing | Pack in paper-drums and two food grade poly bags inside. Net weight: 25kg/drum |
| Storage condition | Store in sealed containers at cool & dry place.protect from light,moisture and pest infestation. |
| Shelf life | Two years when properly stored. |
Specification Sheet of USP39:
| ITEM | SPECIFICATION |
| Appearance | White crystals or crystalline powder |
| Identification | Infrared absorption unifomity |
| Loss on drying | ≤0.30% |
| Residue on ignition | ≤0.40% |
| Specific optical rotation[a]D20° | -9.8° ~-11.2° |
| Heavy metals (Pb) | ≤0.0015% |
| Iron (Fe) | ≤0.003% |
| Chloride(C1) | ≤0.04% |
| Sulfate(SO4) | ≤0.04% |
| Individual Impurities | ≤0.5 |
| Total Impurities | ≤2.0 |
| L-Tyrosine | 98.5% ~102.5% |
| Packing | Pack in paper-drums and two food grade poly bags inside. Net weight: 25kg/drum |
| Storage condition | Store in sealed containers at cool & dry place.protect from light,moisture and pest infestation. |
| Shelf life |
Two years when properly stored |
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Main Product:
Pharmaceutical Intermediates,
Cosmetic Materials,
Plant Growth Regulator,
Feed Additive,
Organic Intermediate ,
Chemical Raw Materials