107468-47-3
N-(phenylsulphonyloxy)quinolinimide
→
~75%
40338-55-4
3-hydroxy-1H-pyrido[3,2-d]pyrimidine-2,4-dione
23439-87-4
6-羟基-5H-吡咯并[3,4-b]吡啶-5,7(6H)-二酮