Product name D(+)-Tryptophan Appearance white powder CAS 153-94-6 Purity 99% MF C11H12N2O2 Melting point 282-285 °C (dec.)(lit.) Boiling point 342.72°C (rough estimate) Refractive index 31 ° (C=1, H2O) Density 1.1754 Storage Cool dry place Shelf Life 24 months Product Description D-Tryptophan (English D(+)-Tryptophan) is a white or off-white to slightly yellow crystalline powder at room temperature. It is odorless or slightly odorless and has a slightly sweet taste. Solubility in water is 1.14g (25ºC), soluble in dilute acid and dilute alkali, stable in alkali, decomposed in strong acid, and plays an important role in the growth and metabolism of humans and animals. It is called the second essential amino acid, and L The physical and chemical properties of -types are almost the same, only the optical rotation is opposite, but their distribution, functions and coenzymes are diverse, and the melting point is very high,…