69205-79-4
2-氨基-4-氧代-4,7-二氢-3H-吡咯并[2,3-D]嘧啶-5-甲腈
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92636-62-9
2-amino-4-oxo-1,7-dihydropyrrolo[2,3-d]pyrimidine-5-carboxylic acid