78686-87-0
2,5-二氯吡啶-3-羰酰氯
→
133627-32-4
8-chloro-11-ethyl-5-methyldipyrido[2,3-d:2',3'-h][1,4]diazepin-6-one
6298-19-7
3-氨基-2-氯吡啶