S. No.

Impurity

Cas no.

1.

Impurity-C

9-(2'-Deoxy-2'-fluoro-b-D-arabinofuranosyl)guanine

103884-98-6

2.

Impurity-F

9-[3-O-[6-amino-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-2-yl]-2-deoxy-2-fluoro-β-D-arabinofuranosyl]- 2-chloro- 9H-Purin-6-amine

1093278-61-5