1.   LAMIVUDINE (USP27)

      (2R, cis)-4-amino-1-(2-hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one

      CAS No. [134678-17-4]

2.    Lamivudine's Intermediates

2.1  L-Menthyl Glyoxylate Hydrate ( MGH )

        CAS No. [11969-64-3]

2.2  (1R,2S,5R)-menthyl-5R-hydroxy-[1,3]-oxathiolane-2R-carboxylate ( HME )

         CAS No. [147126-73-6]

2.3   (1R,2S,5R)-menthyl-5(s)-cytosine-1-yl-[1,3]- -oxathiolane-2R-carboxylate (CME)

         CAS No. [73590-85-9]

2.4   2R-(Hydroxymethyl)-5(s)-cytosin-1-yl-[1,3]--oxathiolane salicylic acid salt

         (Lamivudine Salicylate)

         CAS No. [173522-96-8]

3.     LAMIVUDINE REFERENCE STANDARD (HPLC 100%)

4.     LAMIVUDINE related impurities (RRT at 0.4 mins, 0.9 minutes and Chiral impurity)