Water <0.1 % (K.F.)
Heavy metals (as Pb) <10 ppm
Sulfated ash <0.1 % (800°C)
Specific rotation [a]20/D +17.5° ～ +19.1° (c=3, W/V in H2O)
(abs. max. 267nm,ε=9,600±4%, PH7)：
A250/A260 0.63～0.67
A280/A260 0.70～0.74
Melting point 185℃～190℃
Thymidine： ≤0.2% (HPLC)
Total impurity： ≤0.5% (HPLC)
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