(+)-(2S,5R)-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]cytosine (+)-2',3'-Dideoxy-3'-thiacytidine (+)-3TC (+)-BCH-189 (+)-SddC 134680-32-3 2(1H)-Pyrimidinone, 4-amino-1-[(2S,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]- AIDS-005244 AIDS005244