Properties: white to yellowish white crystal or crystalline powder, slightly sweet, sensitive to light. Stable in lye, decomposes with strong acid. Slightly soluble in water and ethanol, insoluble in chloroform and ether. Melting point 275 ~ 282 ° C Use: biochemical research. Nutritional research. Preparation of tissue culture medium preservation: RT, protected from light English name: DL-Trytophan; DL-2-Amino-3-indolepropionic acid; DL-2-Amino-3-indolylpro-panoic acid; DL-β-3-Indolyl alanine; (±)-2-Amino-3-(3-indolyl)propionic acid Other names: DL-trypsin amino acid; DL-color amino acid; DL-2-amino-3-mercapto-1-propionic acid; DL -Aminopropionic acid CAS number: 54-12-6C11H12N2O2=204.23 Grade: BR content: ≥99.0% specific optical rotation: 0° (C=1 in H2O) Chloride: ≤0.020% Sulfate: ≤0.020% ammonium Salt: ≤0.020% iron salt: ≤10ppm heavy metal: ≤10ppm arsenic salt: ≤1ppm dry weight loss: ≤0.20% burning residue: ≤0.10%
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