D-Tryptophan
We a fine chemical company specialising in the manufacture of products for pharmaceutical and health care, flavour/fragrance, personal care, and other specialised chemical and industrial applications.Strict quality control platform for strict quality identification of synthetic products.It is a high-tech enterprise integrating R&D, production and sales of APIs, pharmaceutical intermediates, fine chemicals and special catalysts.Our company has a 2000 square meter R&D center. The company's production base is mainly located in Liaocheng City, Shandong Province, Yuncheng City, Shanxi Province.Provide you with the most thoughtful and comprehensive service at the best price.
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CAS RN: 153-94-6
Solubility in water
Colorless & clear (c=1)
Specific rotation [α]D20
+31.0°~+33.0°(c= 2,water)
Loss on drying
Not more than 0.3%
Residue on ignition (as sulfate)
Not more than 0.1%
Chloride (Cl)
Not more than 0.02%
Sulfate (SO4)
Not more than 0.03%
Heavy metals (as Pb)
Not more than 10ppm
Iron (Fe)
Not more than 10ppm
Ammonium (NH4)
Not more than 0.02%
Arsenic (As2O3)
Not more than 1ppm
Other amino acids
Not detected by T.L.C.(The spotted amount, 10μg)
Assay
98.5%~101.0%
L-Isomer
Not more than 0.5%