(4-Oxothieno[3,2-d]pyrimidin-3(4H)-yl)acetic acid

4-肼基噻吩并[3,2-d]嘧啶

4-chlorothieno[3,2-d]pyrimidine-7-carboxylic acid

4-氯噻吩并[3,2-d]嘧啶

7-溴噻吩并[3,2-d]嘧啶