L-tryptophan
L-tryptophan is typically a white to slightly yellowish crystalline powder or needle-like crystals. It has a faint, characteristic odor and a slightly bitter taste.SolubilitySparingly soluble in water: Its solubility in water is relatively low, approximately 1.1 g/L at 25°C, but increases slightly with temperature (e.g., ~3.0 g/L at 80°C).Insoluble in organic solvents: It is practically insoluble in ethanol, ether, chloroform, and other non-polar solvents, but soluble in dilute acids and alkalis due to ionization of its functional groups.
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