Appearance: White to off-white powder
Water: ≤0.3%
Specific optical rotation: +96.0 ~ +100.0°
Heavy metals: ≤20ppm
Residue on ignition: ≤0.1%
Individual unspecified impurity: ≤0.1%
Total impurities: ≤1.5%
Assay (HPLC): 98.0%~102.0%
Pentyl [1-(3,4-dihydroxy-5-methyl-oxolan-2-yl)-5-fluoro-2-oxo-pyrimidin-4-yl]aminoformate154361-50-9