D-Tryptophan
D-Tryptophan
Molecular formula: C11H12N2O2
Molecular weight:204.23
CAS No.:153-94-6
【Description】White or yellowish crystal powder, taste slightly sweet.
【Specification】
Item
Limit

Appearance
White or yellow crystalline powder

Assay
99.0%~101.0%

Specific Rotation [α]D20
+30.5°~ +32.5°

Transmittance
≥95.0%

PH
5.5~ 6.4

Loss on Drying
≤0.2%

Residue on Ignition
≤0.1%

Chloride [Cl-]
≤0.02%

Sulfate [SO42-]
≤0.02%

Ammonium [NH4+]
≤0.02%

Heavy Metals [Pb]
≤10ppm

Iron [Fe]
≤10ppm

Arsenic [As2O3]
≤1ppm

Other Amino Acids
Conforms


【Function】D-Tryptophan is important nutrition product, it is be used as prevention of nicotinic acid deficiency in medicine.

【Package】25kg net weight cardboard drum lined with PE bag, or according to the customer`s demand.