2-巯基-4-氨基-7H-吡咯[2,3-d]嘧啶

4-氯吡咯并嘧啶

4,6-diamino-5-trimethylsilylethynylpyrimidine

4-Amino-2-methylthio-7H-pyrrolo-[2,3-d]pyrimidin

2-Cyan-4,4-diethoxybuttersaeurenitril