50844-82-1
methyl 2-(2-methyl-4-oxoquinazolin-3(4H)-yl)acetate
→
~74%
16353-15-4
2-(2-methyl-4-oxoquinazolin-3-yl)acetohydrazide
525-76-8
鄰乙醯胺苯甲酸內酯