43088-64-8
5-甲基-3,4-二氢噻吩并[2,3-d]嘧啶-4-酮
→
56844-14-5
4,6-dichloro-5-methylthieno[2,3-d]pyrimidine
31891-06-2
2-氨基噻吩-3-甲酸乙酯
56844-42-9
6-chloro-5-methyl-3H-thieno[2,3-d]pyrimidin-4-one