An essential amino acid found in naturally produced peptides. Unlike its stereoisomer, L-tryptophan, it is not used in structural or enzyme proteins.

Appearance and properties: white or yellow crystalline powder

Density: 1.362 g/cm3

Boiling point: 447.9oC at 760 mmHg

Melting point: 282-285oC

Stability: Stable. Incompatible with oxidizing agents.

Storage: Store at RT.

Vapor pressure: 4.27E-07mmHg at 25°C

Production method

Dl-tryptophan was used as raw material to add chloroacetic anhydride in the cooling state, then ground in ice water aftersulfuric acid acidification, recrystallized in water after filtration, and finally treated with pancreatic carboxypeptidase toremove L-type, acetic acid acidification, ethanol recrystallization and refining.

Use

It is an important nutrient and is used in medicine as a prevention and treatment agent for scabies. It can used in biochemistry research. And it is an important nutrient which is used as controlling agent of bark favus in medication.