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| L-Tryptophan |
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| 2-amino-3-(1H-indol-3-yl)propanoic acid |
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| 73-22-3 |
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| supplement |
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Items Specifications
Appearance White crystal or crystalline powder
Specific optical rotation[α]25D -29.4- -32.8o
PH 5.5-7.0
Loss on drying ≤0.3%
Residue on ignition ≤0.1%
Chloride ≤0.05%
Sulfate ≤0.03%
Iron ≤0.003%
Heavy metals (Pb) ≤0.0015%
Organic volatile impurities Conform to the requirements
Assay 98.5%-101.5%
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