39551-54-7
2,4-二氯吡啶并[3,2-d]嘧啶
→
~83%
915302-21-5
2-chloropyrido[3,2-d]pyrimidine
656801-64-8
methyl 3-isocyanatopyridine-2-carboxylate
24195-07-1
2-(甲氧基羰基)烟酸
37538-68-4
吡啶并[3,2-d]嘧啶-2,4(1H,3H)-二酮
699-98-9
2,3-吡啶二羧酸酐
27507-08-0
3-(4-methoxybenzyl)pyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione