2-氨基嘧啶

benzyl N-(hydrazinylmethylidene)carbamate

3-amino-9-bromo-5,6-dihydro-4H-benzo[f]quinazolin-1-one

2-氨基-6-乙基-5-甲基-4(1H)-嘧啶酮

4-phenylquinazolin-2-amine