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L-Cysteine Base

Product Name: L-Cysteine Base
Molecular Formula: C3H7NO2S
Molecular Weight: 121.15
CAS No: 52-90-4





Product Specifications


L-Cysteine Base AJI92
Assay 98.0~101.0%
PH 4.5~5.5
Specific rotation[a]D20 +8.3° +9.5°
Specific rotation[a]D25 /
Transmittance(T430) ≥95.0%
Chloride(Cl) ≤0.04%
Ammonium(NH4) ≤0.02%
Sulfate(SO4) ≤0.03%
Iron(Fe) ≤10ppm
Heavy metals(Pb) ≤10ppm
Arsenic ≤1ppm
Other amino acids conforms
Ninhydrin-positive substances /
Loss on drying ≤0.50%
Residue on ignition ≤0.10%

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