Alias amino indopropionic acid


CAS NO 73-22-3


Molecular formula C11H12N2O2



Molecular weight 204.23


Product standard AJI-92 Version, USP-24/26 Version, FCC-4 Version


Property White or a kind of white to yellowish crystalline powder, smell-less or slight smelly, L- type has the bitter taste, the DL- and the D- type have little sweet taste. 289 ??C decompounds,
slightly soluble in water, does not dissolve in the ethyl alcohol;


Dissolves in the diluted acid or the diluted alkali, the long time
illumination will color up; heat together with water can produce the water a small amount of indole, like when heat up under the sodium hydroxide, the cupric sulfate existence, then will produce massive indole; heats up with the acid in the hidden place will be more stable; when coexist with Medicine bulk drugs, carbohydrate,
and aldehyde, it is extremely easy to decompose.


Use Tryptophan is heterocyclic amino acid, is a kind of important and necessary amino acids for human body. It is widely applied in pharmaceutical and food fields.