(pyridin-3-ylamino)thiourea

1H-吡咯并[2,3-c]吡啶-2-羧酸乙酯

1H-吡咯并[2,3-c]吡啶-2-羧酸

5-氨基-1-(3-吡啶)-1H-吡唑-4-甲腈

1,5-二氢-1-(3-吡啶)-4H-吡唑并[3,4-d]嘧啶-4-酮