卡培他滨杂质  Capecitabine impurity

KPB-A  5'-deoxy-5-fluorocytidine 66335-38-4

KPB-D  2',3'-Di-O-acetyl-5'-deoxy-5fluorocytidine  161599-46-8

KPB-E  5'-Deoxy-5-fluoro-N4-(2-methyl-1butyloxycarbonyl)cytidine  162204-30-0

KPB-F  5'-Deoxy-5-fluoro-N4-(3-methyl-1butyloxycarbonyl)cytidine  910129-15-6

KPB-G  [1-[5-Deoxy-3-O-(5-deoxy-β-Dribofuranosyl)-β-D-ribofuranosyl]-5fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]carbamic acid pentyl ester  1262133-64-1

KPB-H  1-[5-Deoxy-2-O-(5-deoxy-β-Dribofuranosyl)-β-D-ribofuranosyl]-5fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]carbamic acid pentyl ester  1262133-66-3

KPB-J  (2R,3R,4R,5R)-2-(5-fluoro-2-oxo-4(((pentyloxy)carbonyl)amino)pyrimidin1(2H)-yl)-5-methyltetrahydrofuran-3,4diyl diacetate  162204-20-8