1-(2',5'-Bis-O-(tert-butyldimethylsilylribofuranosyl)-3-N-methylthymine)-3'-spiro-5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide) 142102-79-2 2,4(1H,3H)-Pyrimidinedione, 1-((5R,6R,8R,9R)-4-amino-9-(((1,1-dimethylethyl)dimetylsilyl)oxy)-6-((((1,1-dimethylethyl)dimethylsilyl)oxy)methyl)-1,7-dioxa-2-thiaspiro(4.4)non-3-en-8-yl)-3,5-dimethyl- 2,4(1H,3H)-Pyrimidinedione, 1-(4-amino-9-(((1,1-dimethylethyl)dimetylsilyl)oxy)-6-((((1,1-dimethylethyl)dimethylsilyl)oxy)methyl)-1,7-dioxa-2-thiaspiro(4.4)non-3-en-8-yl)-3,5-dimethyl-, S,S-dioxide, (5R-(5alpha,6beta,8beta,9alpha))- Tsao-m(3)T