5-O-[[[(1S)-1-Methyl-2-(1-methylethoxy)-2-oxoethyl]amino]-phenoxyphosphinyl]-cytidine

2'-Deoxy-2',2'-difluoro ThyMidine

Gemcitabine

N-(7-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)benzamide

5-Ethoxymethyluridine

2,3,5-Tri-O-acetyl α-Adenosine

Trans-Methyl1-benzyl-4-(t-butoxycarbonylamino)-pyrrolidine-3-carboxylate

Floxuridine Impurity 1

N-(9-(6-(hydroxymethyl)-4-tritylmorpholin-2-yl)-9H-purin-6-yl) benzamide

2'-bromo-2'-deoxy-5-methyluridine

N2-Isobutyryl-7'-OH-Morpholinoguanosine

N-(9-[(2R,6S)-6-(hydroxymethyl)-4-(triphenylmethyl)morpholin-2-yl]-6-oxo-6,9-dihydro-5H-purin-2-yl)-2-methylpropanamide

(2S,6R)-6-{N2-Isobutyryl-guanin-9-yl}-4-tritylmorpholin-2-yl]methyl Dimethylphosphoramide Chloridate

Valnivudine

2',3',5'-Tri-O-benzoyl-2'-C-Methyl-5-Methyluridine

1-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-5-ethynyluracil

5-​Hydroxyuridine

3-Methylthymidine

N-(9-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)-2,2-diphenylacetamide

3-(3-Chloro-2-hydroxypropyl)-2'-deoxy-5-methyluridine