2-氨基-6-碘嘌呤

2-氟-6-氯嘌呤

2-碘-6-氯嘌呤

2-氨基-6-氯-9-(beta-d-2-脱氧核糖)嘌呤

2-[(2-aminopurin-7-yl)methoxy]ethanol