EMT58: Emtricitabine IP Impurity H

Emtricitabine S-Oxide (R)-Isomer ; 

4-Amino-5-fluoro-1-[(2R,3R,5S)-2-(hydroxymethyl)-3-oxo-1,3-oxa-λ4-thiolan-5-yl]pyrimidin-2(1H)-one ; 

C8H10FN3O4S ;
Mol. Wt.: 263.25 ;

CAS # 152128-77-3 (Mixture of Diastereomers) ;