22276-95-5
5-溴-4-氯-7H-吡咯并[2,3-d]嘧啶
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57260-71-6
1-Boc-哌嗪
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~45%
1072027-36-1
4-(4-Boc-1-哌嗪)-5-溴-7H-吡咯并[2,3-d]嘧啶