Capecitabine intermediate

Appearance: White or off white powder;
Specific rotation: should be between+50.0 ︒ and+56.0 ︒;
Dry weight loss: not exceeding 2.0%;
Chloride: not exceeding 0.01%;
Sulfate: not exceeding 0.02%;
Related substances: Impurity RRT=2.6 should not exceed 0.3%, and the maximum single impurity should not exceed 0.1%; The total impurities shall not exceed 0.5%;
Content: should be between 98.0% and 101.0%.