624-83-9
异氰酸甲酯
+
30937-58-7
→
~74%
30914-82-0
6-chloro-3-methyl-1,3-oxazine-2,4-dione
769-42-6
1,3-二甲基巴比妥酸
2565-47-1
1-甲基巴比妥酸
82922-19-8
1-malonamoyl-1-methylurea