D-Methionine CAS:348-67-4 98.5%~101.0%
Solubility in water |
Colorless & clear (c=3) |
Specific rotation [α]D20 |
-23.0°~-25.0°(c= 8, 6M-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, 20μg) |
Assay |
98.5%~101.0% |
L-Isomer |
Not more than 0.5% |
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