Project Description

D-tryptophan | CAS# 153-94-6

Chemical NameD-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)

ItemsSpecificationResultsTest Method
Descriptionwhite to slightly yellowish-white crystals or crystalline Powderwhite crystalline PowderAJI
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<20ppmAJI
Sulfate≤0.020%<0.020%AJI
Heavy metals≤10ppm<10ppmAJI
Arsenic≤1ppm<1ppmAJI
Other amino acidsconformsmeet the requirementsAJI
Loss on drying≤0.20%0.12%AJI
Residue on ignition≤0.10%0.06%AJI
Assay99.0%-101.0%99.7%AJI
PH5.5-6.46.0AJI
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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