N-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-2-yl)-2-methylpropanamide

4-methoxy-5-nitro-7H-pyrrolo[2,3-d]pyrimidin-2-amine

4,5-二氯-1H-吡咯并[2,3-d]嘧啶-2-胺

5-溴-4-氯-7H-吡咯并[2,3-d]嘧啶-2-胺

4-氯-5-碘-1H-吡咯并[2,3-d]嘧啶-2-胺