7170-01-6
3-甲基-1H-1,2,4-噻唑
+
105-53-3
丙二酸二乙酯
→
~50%
40775-75-5
7-hydroxy-1H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one
78706-26-0
5,7-二氯-[1,2,4]噻唑并[1,5-a]嘧啶