5-乙炔-2-脱氧尿苷

胸苷-d3

5-O-(4-甲基苯基磺酰基)胸腺嘧啶脱氧核苷

3',5'-bis-O-(p-tolylsulfonyl)thymidine

5’-O-Trityl-3’-β-hydroxythymidine