Customization: | Available |
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CAS No.: | 73-22-3 |
Formula: | C11h12n2o2 |
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Product Name
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Tryptophan
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Specification
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99.95%
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Appearance
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white powder
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Grade
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Food grade,
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CAS
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/
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MOQ
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1kg
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Storage conditions
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Store in cool & dry place, Keep away from strong light and heat.
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Sample
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Available
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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 | ≤0.50% |
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
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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% |
Organic volatile impurities | / | / | / | / |
Endotoxin | / | / | <50EU/g | / |
CAS | English name |
56-40-6 | Glycine |
63-68-3 | L-Methionine |
63-91-2 | L-Phenylalanine |
72-19-5;6028-28-0 | L-Threonine |
73-22-3 | L-Tryptophan |
147-85-3 | L-Proline |
56-89-3 | L-Cystine |
71-00-1 | L-Histidine,free base; L-HIS = H-His-OH; (S)-2-Amino-3-(4-imidazolyl)propionic acid~H-His-OH; L-Histidine Base; H-His-OH; His |
74-79-3 | L-Arginine(Base) |
1119-34-2 | L-Arginine HCL |
372-75-8 | L-Citrulline |
73-32-5 | 2-Amino-3-methylvaleric acid; (2S)-2-Amino-3-methylpentanoic acid; (2S,3S)-(+)-Isoleucine; Isoleucine; L-2-Amino-3-methylvaleric Acid; L-(+)-Isoleucine; L-ISOLEUCINE SIGMA GRADE |
14007-45-5 | Potassium L-Aspartate |
56-84-8 | L-Aspartic Acid,(S)-Aminosuccinic Acid |
52-90-4 | L-Cysteine |
7048-04-6 |
L-Cysteine.HCL.H2O |
52-89-1 | L-Cysteine monohydrochloride |
61-90-5 | L-Leucine;(S)-2-Amino-4-methylpentanoic acid; L-Leucine 99+ %; H-Leu-OH; L-Leu; L(+)LEUCINE |
56-45-1 | L-Serine;Ser;L-2-aminohydroxypropionic acid;L-β-hydroxyalanine |
56-41-7 | L-Alanine;L-alanine-12C3; 2-Aminopropanoic Acid; H-Ala-OH~L-2-Aminopropionic acid; Ala; |
6893-26-1 | D-Glutamic acid |
673-06-3 | D-phenylalanine |
153-94-6 | D-Tryptophan |
344-25-2 | D-Proline |
640-68-6 | D-Valine |
1783-96-6 | D-Aspartic Acid |
312-84-5 | D-Serine |
338-69-2 | D-Alanine |
59-51-8 | DL-Methionine |
302-84-1 | DL-Serine |
537-55-3 | N-Acetyl-L-Tyrosine |
616-91-1 | N-Acetyl-L-Cysteine |
1188-21-2 | N-Acetyl-L-leucine |
3184-13-2 | L-Ornithine HCL |
60-18-4 | L-Tyrosine;3-(4-Hydroxyphenyl)-L-alanine; H-Tyr-OH; L-tyrosine,99+% (98% ee/glc); L-tyrosine free base cell culture*tested; L-tyrosine plant cell culture tested; L-Tyrosine, Free Base; tyrosine usp; Tyr |
56-87-1 | L-Lysine base |
10098-89-2,657-27-2 | Lysine, hydrochloride |
56-86-0 | L-Glutamic Acid |
72-18-4 | L-Valine |
56-85-9 | L-Glutamine |
107-35-7 | Taurine |
632-20-2 | D-Threonine |
157-06-2 | D-Arginine |
51-35-4 | L-Hydroxyproline |
Goods weight |
Packing |
Shipping method |
Lead-time |
1-50kg |
Below 5kg Use Foil bag;5-25kg use two layer PP bag,then into master carton or cardboard drum |
International express |
1~3 days after your payment |
100-200kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Air shipping Sea Shipping |
3~5 days after your payment |
Over 500kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Sea shipping |
5~10 days after your payment |
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