78647-31-1
4-乙氧羰基硫杂环戊-3-酮
→
~35%
5719-29-9
5,7-dihydro-1H-thieno[3,4-d]pyrimidin-4-one
53826-89-4
4-氯-5,7-二氢噻吩并[3,4-d]嘧啶