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Specific Rotation [a]D20o | -10.5° —-12.3° |
Sulfte(SO4) | ≤0.02% |
Heavy metal(PB) | ≤10ppm |
Iron(FE) | ≤10ppm |
Loss on Drying | ≤0.5% |
Arsenic(AS2O3)(Sulfated) | ≤1ppm |
Assay | 98.5% —101.0% |
Residue on ignition | ≤0.1% |
Other amino acid | Chromatographically not detectable |
Chloride | ≤0.2% |
L-Pyroglutamic Acid