N,N-二苯基-氨基甲酸 2-(乙酰氨基)-9H-嘌呤-6-基酯

Guanosine

7-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-N2-acetylguanine

9-benzyl-6-chloro-2-iodopurine

2-amino-9-[(2R,3S,4R,5R)-4-fluoro-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-3H-purin-6-one