2,6-diamino-5,6,7,8-tetrahydro-1H-quinazolin-4-one

2,4-二氨基-5,6,7,8-四氢-6-喹唑啉羧酸

2,4-二氯-5,6,7,8-四氢喹唑啉-6-羧酸

2,4-diamino-5,6,7,8-tetrahydroquinazoline-6-carboxamide

2,4-bis(benzylamino)-5,6,7,8-tetrahydroquinazoline-6-carboxylic acid