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White to off-white crystalline powder
Water ≤5.0%
Residue on ignition ≤0.2%
Heavy metals ≤10ppm
Cytosine≤0.1%
a-isomer≤0.1%
Other single impurity≤0.3%
Total impurities≤0.5%
Assay (by titration) 98.0~102.0%
Antineoplastic drugs
