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Product Name | L-Tryptophan | CAS No. | 73-22-3 |
L-Tryptophan | USP32 | AJI92 | CP2015 Injection Grade | EP8 |
Assay | 98.5-101.5% | 99.0-100.5% | ≥99.0% | 98.5-101.0% |
PH | 5.5~7.0 | 5.4~6.4 | 5.4~6.4 | / |
Specific rotation[a]D20 | / | -30.5°~32.5° | -30.0°~32.5° | -30.0°~33.0° |
Specific rotation[a]D25 | -29.4°~32.8° | / | / | / |
Transmittance(T430) | / | ≥95.0% | ≥95.0% | Clear & colorless ≤BY6 |
Chloride(Cl) | ≤0.05% | ≤0.02% | ≤0.02% | ≤0.02% |
Ammonium(NH4) | / | ≤0.02% | ≤0.02% | ≤0.02% |
Sulfate(SO4) | ≤0.03% | ≤0.02% | ≤0.02% | ≤0.03% |
Iron(Fe) | ≤30ppm | ≤20ppm | ≤20ppm | ≤20ppm |
Heavy metals(Pb) | ≤15ppm | ≤10ppm | ≤10ppm | ≤10ppm |
Arsenic | / | ≤1ppm | ≤1ppm | / |
Other amino acids | / | Conform | | Impurity A≤10ppm Sum of impurities with a retention time less than that of Tryptophan <100ppm Sum of impurities with a retention time great than that of Tryptophan and up to 1.8 time of N acetyltryptophan <300ppm |
Ninhydrin-positive substances | / | / | / | Conform |
Loss on drying | ≤0.30% | ≤0.20% | ≤0.20% | ≤0.50% |
Residue on ignition | ≤0.10% | ≤0.10% | ≤0.10% | ≤0.10% |
Endotoxin | / | / | <50EU/g | / |
Packing &shipping&Payment
Packing:25kg/drum
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
| Quantity(Kilograms) | 1 - 10000 | >10000 |
| Est. Time(days) | 5 | To be negotiated |
Company information
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.
Advantage
In stock
Japan
