D-tryptophan

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Product Name	D-tryptophan
Other Name	D-2-amino-3 - (β - indole) propionic acid; D - (+) - tryptophan
Molecular Formula	C11H12N2O2
Molecular Weight	204.23
CAS	153-94-6
EINECS	205-819-9

Appearance and character: white or yellow crystalline powder.

DL tryptophan was used as raw material, chloroacetic anhydride was added in the cooling state, then it was acidified by sulfuric acid, ground in ice water, and recrystallized in filtered water. Finally, it was treated with pan carboxypeptidase to remove L-forms, acidified by acetic acid and refined by ethanol recrystallization. It is an important nutrient and can be used as a control agent of leprosy in medicine.