5451-40-1
2,6-二氯嘌呤
→
6969-28-4
2-hydrazinyl-3,7-dihydropurin-6-one
5446-89-9
2-methylsulfanyl-3,7-dihydropurin-6-one
13368-14-4
2-氯-6-羟基嘌呤