504-64-3
二氧化三碳
+
1726-86-9
(6Z)-6-[(hydroxyamino)methylidene]-4-methylcyclohexa-2,4-dien-1-one
→
~71%
89228-63-7
N-hydroxy-6-methyl-2-oxochromene-3-carboxamide
10242-13-4
6-甲基-3-羧酸香豆素