D-Tyrosine CAS:556-02-5 98.5%~101.0%
Solubility in 3M-HCl |
Colorless & clear (c=5) |
Specific rotation [α]D20 |
+11.2°~+12.3°(c= 5, 1M-HCl) |
Loss on drying |
Not more than 0.3% |
Residue on ignition (as sulfate) |
Not more than 0.1% |
Chloride (Cl) |
Not more than 0.03% |
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% |
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