Lamivudine & its intermediates

Lamivudine & Intermediates 1. LAMIVUDINE (USP31) (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)