Project Description

D-tryptophan | CAS# 153-94-6

Chemical Name D-Tryptophan
CAS No. 153-94-6
Molecular Formula: C11H12N2O2
Molecular Weight: 204.23

D(+)-TRYPTOPHAN , A Nutritional supplements

Application : Important nutrients, on medicine for the prevention and treatment of niacin agent(Predicted)

Items Specification Results Test Method
Description white to slightly yellowish-white crystals or crystalline Powder white crystalline Powder AJI
Specific Rotation [a]20D +30.5°~+32.5° +31.4° AJI
Transmittance ≥95.0% 95.5% AJI
Chloride ≤0.020% <0.020% AJI
Ammonium ≤0.02% <0.020% AJI
Iron ≤20ppm <20ppm AJI
Sulfate ≤0.020% <0.020% AJI
Heavy metals ≤10ppm <10ppm AJI
Arsenic ≤1ppm <1ppm AJI
Other amino acids conforms meet the requirements AJI
Loss on drying ≤0.20% 0.12% AJI
Residue on ignition ≤0.10% 0.06% AJI
Assay 99.0%-101.0% 99.7% AJI
PH 5.5-6.4 6.0 AJI
Conclusion: Meet the requirement of AJI92 standard.

Product Specifications:

Synonyms: D-TRP; D(+)-TRYPTOPHAN; D-TRYPTOPHANE;
Appearance : Powder
Physical State : Solid
Storage : Store at room temperature(Keep in a cool & dry place)
Melting Point : 282-285° C (lit.)(dec.)
Boiling Point : 447.9° C at 760 mmHg
Density : 1.4 g/cm3 (Predicted)
Refractive Index : n20D 1.70 (Predicted)
Solubility : Soluble in 0.5M hydrochloric acid (50 mg/ml), water (11 mg/ml at 20° C), hot alcohol, and DMSO. Insoluble in chloroform.

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